Best eSIM for Tunisia 2026: 6 Plans Compared for Tunis, Sousse & the Sahara

In Tunisia, a local tourist SIM means queuing at an Ooredoo Tunisia, Orange Tunisie, or Tunisie Telecom shop with your passport and filling out a registration form — an eSIM skips all of that, and the best one is Airalo . After comparing the six eSIM providers that actually sell Tunisia plans against the country’s three real mobile networks — across Tunis, Sidi Bou Said, Carthage, Sousse, Hammamet, Djerba, Kairouan, and the desert gateway towns toward Matmata and the Sahara — Airalo delivered the best combination of carrier flexibility, plan choice, and consistent performance across Tunisia’s coast-to-desert geography. For best value per GB, Saily connects to a top-tier Tunisian network with plans starting from around $3.99 for 1GB.

Tunisia is a country where reliable mobile data quietly makes or breaks your trip. European roaming here is very expensive — Tunisia sits outside the EU “roam like at home” zone, so a French or German SIM racks up eye-watering per-megabyte charges the moment you land. Ride-hailing is limited (Bolt operates in Tunis but not nationwide), so you lean on Google Maps and live data to coordinate taxis and shared louages between cities. And you need connectivity to navigate the labyrinthine medinas of Tunis and Sousse, translate French and Arabic signage, and stay reachable on desert excursions toward Matmata, Tozeur, and Douz. A working data connection from the moment you clear Tunis-Carthage airport transforms the whole experience.

VPN note: VoIP calls in Tunisia — WhatsApp, FaceTime, Messenger — generally work, but call quality can be throttled or inconsistent on congested mobile networks, and public café and hotel WiFi is not something you want to hand your banking logins to. Pairing your eSIM with a VPN improves call reliability, encrypts your connection, and lets you reach home streaming and banking services that geo-block foreign IPs. We recommend NordVPN (our review) or Surfshark (our review). See our best VPN for travel guide for the full rundown.

For unlimited data without watching a counter, Holafly ‘s Tunisia plan removes all data anxiety — particularly useful on multi-day 4x4 desert tours where usage is impossible to predict. For the cheapest daily rates, Trip.com offers budget-friendly daily-reset plans.

Tunisia is a natural sibling to its North African neighbors, so if your itinerary continues onward, see our guides to the best eSIM for Morocco and the best eSIM for Egypt. Here’s every provider worth considering, with realistic speed expectations, honest pricing, and exactly which eSIM to buy for your Tunisia trip.

Quick Picks: Best eSIM for Tunisia at a Glance

---

1. Airalo — Best Overall eSIM for Tunisia

Network: Ooredoo Tunisia & Orange Tunisie | Starting Price: from ~$4.50/1GB | Unlimited Data: No | 5G: No | Tethering: Yes

Airalo is the world’s largest eSIM marketplace, with over 20 million users worldwide. For Tunisia, Airalo offers plans that run on the country’s leading operators — Ooredoo Tunisia and Orange Tunisie — giving you the flexibility to compare carriers, data buckets, and validity windows before you commit.

Why Airalo for Tunisia

• Marketplace model: Compare plans on Tunisia’s leading carriers before buying, instead of being locked to one network
• Expected speeds: Roughly 25-45 Mbps on urban 4G in Tunis and along the Sahel coast, dropping to 4G/3G in the desert south — enough for maps, translation, and photo uploads
• Pricing: Plans start from approximately $4.50 for 1GB/7 days, with 3GB, 5GB, and 10GB monthly buckets scaling down the per-GB cost
• Setup: Polished app with a 3-5 minute activation via QR code or direct eSIM install
• Support: 24/7 in-app chat with quick response times
• Multi-trip friendly: Combining Tunisia with Morocco, Algeria, Malta, or Italy? Airalo covers 200+ countries on one platform

Expected 4G Speeds in Tunisia (typical ranges)

These are realistic ranges you can expect on Tunisian 4G, based on the carriers’ coverage footprints and network performance — not a guarantee for any single street corner. Signal is strongest in coastal city centers and weakest deep in the desert and inside thick medina walls.

Location	Typical Download	Typical Upload	Network
Tunis — city center / Ville Nouvelle	30-50 Mbps	10-18 Mbps	4G LTE
Tunis — Medina	15-30 Mbps	5-10 Mbps	4G LTE
Sidi Bou Said & Carthage	25-45 Mbps	8-15 Mbps	4G LTE
Sousse — resort strip & medina	25-40 Mbps	8-14 Mbps	4G LTE
Hammamet & Nabeul	25-40 Mbps	8-13 Mbps	4G LTE
Djerba (Houmt Souk & resorts)	20-35 Mbps	6-12 Mbps	4G LTE
Kairouan	15-30 Mbps	5-10 Mbps	4G LTE
Tozeur & Douz (desert gateways)	10-25 Mbps	4-8 Mbps	3G/4G
Matmata & Sahara tracks	5-15 Mbps	2-6 Mbps	3G / patchy

Who It’s For

Airalo is ideal for travelers who want maximum choice and flexibility. Tunisia’s three networks have different strengths — Ooredoo Tunisia and Orange Tunisie both offer broad 4G in the populated north and Sahel, while coverage in the deep south is thinner across the board. Airalo’s marketplace lets you pick the plan that best fits your itinerary, and it’s the strongest choice for North Africa or Mediterranean multi-destination trips.

Get Airalo Tunisia eSIM →

Read our full Airalo review for a deeper look.

---

2. Saily — Best Value eSIM for Tunisia

Network: Ooredoo Tunisia | Starting Price: from ~$3.99/1GB | Unlimited: No | 5G: No | Tethering: Yes

Saily connects to Ooredoo Tunisia, one of the country’s largest mobile operators with wide 4G LTE coverage across the coastal cities and Sahel. Built by Nord Security (the company behind NordVPN), Saily pairs solid infrastructure credibility with the lowest per-GB pricing in this roundup. For a full breakdown of the provider, read our Saily review.

Tunisia Plan Pricing (approximate)

Prices shift with promotions, so treat these as guide figures rather than fixed quotes.

Plan	Data	Validity	Approx. Price	Approx. Per GB
Starter	1 GB	7 days	~$3.99	~$3.99/GB
Basic	3 GB	30 days	~$10.99	~$3.66/GB
Standard	5 GB	30 days	~$15.99	~$3.20/GB
Plus	10 GB	30 days	~$27.99	~$2.80/GB
Premium	20 GB	30 days	~$47.99	~$2.40/GB

For a standard 10-14 day trip covering Tunis, Sousse, Djerba, and a desert excursion with moderate usage (maps, translation, taxi/louage coordination, social media), the 5GB or 10GB plans hit the sweet spot. Tunisia’s limited ride-hailing means you’ll lean heavily on live maps, which burns more data than you might expect. Digital nomads settling in Tunis or Sousse for a month should look at the 10GB or 20GB plans.

What to Expect from Saily in Tunisia

On Ooredoo Tunisia’s 4G, expect roughly 30-50 Mbps in central Tunis, 25-40 Mbps across the Sousse-Monastir-Hammamet coast, and 20-35 Mbps on Djerba — comfortably enough for uploading photos, video calls, and streaming. Speeds ease off inside the covered medina alleys and drop to 3G on the desert routes toward Douz and Matmata. Saily’s clean in-app usage tracker makes it easy to watch your remaining data and top up before you run dry.

Who Should Choose Saily

Saily is the right pick for most Tunisia travelers — whether you’re doing a week on the Sousse coast, a Tunis-plus-Sahara loop, or a longer remote-work stay. A top-tier Tunisian network, a tidy monitoring app, tethering support, and the lowest per-GB pricing make it the default recommendation.

Not ideal for: Travelers who want unlimited data without tracking usage, or anyone spending significant time on deep-desert tracks where coverage is inherently limited on every provider.

Get Saily Tunisia eSIM →

---

3. Holafly — Best Unlimited Data for Tunisia

Network: Tunisian local carriers | Starting Price: from ~$19/5 days | Unlimited: Yes | 5G: No | Tethering: Limited

Tunisia is a country where data usage spikes unpredictably. Between running Google Maps continuously to coordinate taxis and louages, translating French and Arabic menus, uploading photos from Carthage and the Sidi Bou Said blue-and-white lanes, streaming on long transfers (Tunis to Tozeur is a 6-7 hour drive), video-calling home from a desert camp, and researching ferry or excursion options, a typical tourist day in Tunisia can burn 1.5-3 GB without trying. Holafly ’s unlimited Tunisia plan removes all of that guesswork.

Unlimited Tunisia Plan Pricing (approximate)

Plan	Data	Validity	Approx. Price	Approx. Per Day
Short Trip	Unlimited	5 days	~$19	~$3.80/day
Week	Unlimited	7 days	~$27	~$3.86/day
Extended	Unlimited	10 days	~$34	~$3.40/day
Two Weeks	Unlimited	15 days	~$47	~$3.13/day
Long Stay	Unlimited	30 days	~$64-69	~$2.30/day

The 10-day plan is the sweet spot for a classic Tunis-Sousse-Sahara itinerary — unlimited data for a little over $3/day. Travelers adding Djerba and an extended desert leg should step up to the 15-day plan.

What to Expect from Holafly in Tunisia

Unlimited plans typically run a touch slower than capped ones — expect roughly 20-40 Mbps on urban 4G, which is the usual trade-off for not counting gigabytes. That’s still perfectly adequate for everything a traveler needs in Tunisia: maps load instantly, translation is snappy, photo uploads are smooth, and messaging runs flawlessly.

Tethering restriction: Holafly caps hotspot/tethering (typically a small daily allowance) on unlimited plans. If you need to share your connection with a laptop for real work, choose Saily or Airalo instead.

Who Should Choose Holafly

Holafly is the pick for multi-day desert tour travelers (unpredictable connectivity makes unlimited data valuable), content creators uploading medina and Sahara footage all day, video-callers staying in daily touch with home, and anyone who refuses to count gigabytes on a packed Tunisia itinerary. It also pairs well with a VPN — you can leave the VPN running continuously without worrying about the extra data overhead.

Not ideal for: Light users who’ll stay under 3 GB total, anyone who needs full tethering for laptop work, or travelers chasing the absolute fastest speeds.

Get Holafly Unlimited Tunisia eSIM →

Read our full Holafly review for a deeper look.

---

4. Trip.com — Cheapest Daily Rates for Tunisia

Network: Tunisian local carriers | Starting Price: ~$1.50-3/day | Unlimited: Daily cap plans available | 5G: No | Tethering: Varies by plan

Trip.com offers eSIM plans with some of the cheapest daily rates available for Tunisia. Their daily-reset model gives you a fixed allocation each day (typically 500MB-1GB), refreshing at midnight. That structure is ideal for short Tunis or Djerba city breaks and budget travelers who want predictable, pay-per-day pricing.

Why Trip.com for Tunisia

• Ultra-affordable: Daily plans start around $1.50-3/day — often the cheapest option for trips under a week
• Daily reset: A fresh data allocation every day instead of a single pool you have to ration
• Bundle potential: If you’re already booking Tunisia flights or hotels through Trip.com, adding an eSIM is effortless
• Short-trip sweet spot: Pay only for the days you actually need
• Expected speeds: Roughly 20-40 Mbps on urban 4G in Tunis and the coastal resorts

Who Should Choose Trip.com

Trip.com is the pick for budget travelers on short Tunis or Djerba trips (3-7 days) who want the lowest daily cost. It’s also a strong choice for resort visitors who lean on hotel WiFi and only need mobile data for excursions, maps, and getting between towns.

Not ideal for: Multi-day desert tours where daily needs can spike, heavy data users, or anyone who wants a single large pool to draw down over a longer trip. If you regularly need more than 1GB/day, Saily or Holafly will serve you better.

Get Trip.com Tunisia eSIM →

---

5. Nomad eSIM — Best Free Trial for Tunisia

Network: Tunisian local carriers | Starting Price: Free trial available | Unlimited: No | 5G: No | Tethering: Yes

Nomad eSIM stands out with its free trial eSIM — a genuine risk-reducer for travelers nervous about whether eSIM technology will work in a destination like Tunisia. Install the free trial before your trip, confirm your phone connects to a Tunisian network at Tunis-Carthage or Djerba-Zarzis airport, then upgrade to a paid plan with confidence.

Why Nomad eSIM for Tunisia

• Free trial: Test connectivity at no cost before committing — reassuring if you’ve never used an eSIM abroad
• Simple interface: A clean app focused on painless activation
• Competitive pricing: Paid plans are mid-range with data buckets from 1GB upward
• Expected speeds: Roughly 20-35 Mbps on 4G in Tunis and the coastal cities
• Good backup: Keep the free trial installed alongside your primary eSIM as a connectivity fallback

Who Should Choose Nomad eSIM

Nomad eSIM is the pick for first-time eSIM users visiting Tunisia and travelers who want a backup connectivity option. The free trial lets you confirm Tunisian carrier compatibility before spending a cent.

Not ideal for: Power users who need the fastest speeds or unlimited data. Nomad’s paid plans are solid but don’t match Saily on per-GB value or Holafly on unlimited data.

Try Nomad eSIM Free →

---

6. Simify — Best for Multi-Destination Trips Including Tunisia

Network: Ooredoo Tunisia / Orange Tunisie | Starting Price: from ~$5/1GB | Unlimited: No | 5G: No | Tethering: Yes

Simify is an Australian eSIM provider with 190+ country coverage. For Tunisia specifically, Simify connects to the leading local carriers and delivers dependable 4G across Tunis, Sousse, and the coastal resorts — expect roughly 25-45 Mbps on urban 4G.

Tunisia is commonly combined with other destinations — a Mediterranean cruise stop, a Malta or Sicily hop, a broader North Africa circuit through Morocco, or a longer Middle East trip. With 190+ countries on a single provider, Simify saves you the hassle of switching eSIMs between legs. For anyone stringing Tunisia together with neighbors, see our best eSIM for Africa and best eSIM for the Middle East guides — but if you want one eSIM to rule the whole route, Simify’s coverage continuity is a real advantage.

Get Simify eSIM →

---

Tunisia eSIM Comparison Table

Here’s every provider worth considering for Tunisia, side by side. Speeds are typical urban-4G ranges, and prices are approximate.

---

How to Choose the Right Tunisia eSIM

By Trip Type

Tunis or Djerba city break (3-5 days): Trip.com’s daily plans or Saily’s 1-3GB plan. You’ll use data for maps, coordinating taxis, translation, and social media. Budget 500MB-1GB per day.

Classic circuit (10-14 days, Tunis + Sousse + Djerba): Saily’s 5-10GB plan or Airalo’s 5GB plan. This covers maps, louage/taxi coordination, translations, and moderate photo uploads across several cities. Heavy social users should consider Holafly unlimited.

Desert tour (Tozeur, Douz, Matmata, Sahara): Holafly unlimited is the safest bet. Coverage is patchy off the paved roads, so unlimited data lets you upload and browse whenever signal returns without rationing a fixed pool during your strong-signal windows.

Digital nomad / remote-work stay (Tunis or Sousse, 2-4 weeks): Holafly’s long-stay unlimited plan, or Saily’s 20GB plan if you have reliable coworking or café WiFi to lean on.

Multi-country North Africa or Mediterranean trip: Airalo or Simify for seamless coverage across Tunisia, Morocco, Malta, Italy, and beyond without switching eSIMs.

By Budget

Budget Level	Best Pick	Trip Cost	Why
Ultra-budget	Trip.com	~$10-20	Cheapest daily rates
Value	Saily	~$11-28	Best per-GB pricing
Mid-range	Airalo	~$11-30	Most carrier flexibility
Unlimited	Holafly	~$27-69	No data limits on desert tours

---

Tunisia Coverage Tips by Location

Tunis

The capital has Tunisia’s best mobile infrastructure. Expect 30-50 Mbps across the Ville Nouvelle (Avenue Habib Bourguiba and the modern center), with reliable 4G in the government and business districts. The Tunis Medina — a dense UNESCO-listed warren of covered souks — sees signal dip to 15-30 Mbps as thick walls and narrow alleys weaken reception, though you’ll rarely lose service entirely. The Bardo Museum, Belvedere Park, and the lakeside Les Berges du Lac district all hold strong 4G.

Suburban gems: Sidi Bou Said (the blue-and-white cliff village) and Carthage (the Roman and Punic ruins) both sit on good coastal 4G at 25-45 Mbps — plenty for photos and maps as you wander the archaeological sites.

Sousse & the Sahel Coast

Tunisia’s third city and beach-resort hub delivers 25-40 Mbps along the resort strip, the marina at Port El Kantaoui, and the central medina. Coverage is dependable throughout the tourist zones. Neighboring Monastir (with its ribat fortress and airport) and the beaches toward Mahdia hold similar speeds with no notable dead zones.

Hammamet & Nabeul

The Cap Bon resort towns average 25-40 Mbps across the yasmine marina, the old medina, and the hotel zones. Strong, consistent 4G for a beach-focused stay.

Djerba

The island resort of Djerba averages 20-35 Mbps in Houmt Souk (the main town) and the northeastern hotel zone. Coverage is solid where tourists cluster, thinning a little across the quieter island interior and the salt-flat roads. Fine for maps, messaging, and uploading beach and Star Wars filming-location photos.

Kairouan & the Interior

Tunisia’s holy city and its Great Mosque sit on 15-30 Mbps 4G in and around the medina — adequate for navigation and photos, with the usual medina-wall signal softening in the tightest lanes. Interior towns like El Djem (the vast Roman amphitheatre) hold usable 4G along the main routes.

The Desert South (Tozeur, Douz, Matmata & the Sahara)

This is where coverage becomes variable. Tozeur (the palm-oasis gateway) and Douz (“the gateway to the Sahara”) have functional 4G/3G in town at 10-25 Mbps — enough to plan, book, and message. Matmata village (the underground Berber dwellings famous from Star Wars) has basic coverage, but the moment you head onto the desert tracks toward the dunes, the chott salt lakes, or remote oases, expect signal to fade to patchy 3G or drop out entirely. Download offline maps of the region before you leave the paved roads, and treat unlimited data as insurance if you’re doing a multi-day 4x4 tour.

---

VPN Considerations for Tunisia

A VPN in Tunisia is a smart companion rather than an absolute necessity — but there are real reasons to run one:

VoIP reliability: WhatsApp, FaceTime, and Messenger calls generally work in Tunisia, but call quality can be throttled or inconsistent on busy mobile networks and hotel WiFi. Routing through a VPN server abroad often restores smoother, more reliable voice and video calls.

Privacy on shared WiFi: Café, riad, and hotel WiFi across Tunisia is convenient but not something you want to trust with banking logins or work accounts. A VPN encrypts your connection on any network.

Home streaming and banking: Many home streaming libraries and some bank portals geo-block or flag foreign IP addresses. Connecting to a home-country VPN server keeps those services working as if you never left.

Recommended VPNs: NordVPN and Surfshark are both reliable choices for Tunisia — install and sign in before you travel. Running a VPN adds roughly 5-15% to your data usage, which is another reason Holafly’s unlimited plan is appealing if you plan to keep the VPN on continuously. See our best VPN for travel guide for the full comparison.

---

eSIM vs Local SIM in Tunisia

When an eSIM Wins

Trips under 30 days: A local Tunisian tourist SIM requires your passport and a registration form completed in person at an Ooredoo, Orange, or Tunisie Telecom shop. The queues and paperwork are real. An eSIM skips all of it — install before your flight and you’re connected the moment you land at Tunis-Carthage or Djerba-Zarzis.

Avoiding roaming bills: European travelers who simply roam on their home SIM face very expensive per-megabyte charges in Tunisia, which sits outside the EU roaming zone. An eSIM sidesteps that entirely with a fixed, prepaid price.

Keeping your home number: Dual SIM means your physical SIM stays active for WhatsApp messages, banking 2FA codes, and important calls from home while your eSIM handles data.

When a Local SIM Wins

Stays over 30 days: Ooredoo Tunisia, Orange Tunisie, and Tunisie Telecom sell generous prepaid data bundles in Tunisian dinar that undercut travel eSIMs on price for long stays. For a month or more, a registered local SIM is cheaper per gigabyte.

Need a Tunisian phone number: Some local delivery apps and services want a Tunisian number for SMS verification. Tourist eSIMs are data-only.

Where to buy local SIMs: Tunis-Carthage and Djerba-Zarzis airports (arrivals-hall carrier counters), plus Ooredoo, Orange, and Tunisie Telecom shops in every city. Bring your passport for registration.

---

Essential Tunisia Travel Apps

Reliable data makes these apps genuinely useful:

• Google Maps — The backbone of getting around Tunisia. Download offline maps for Tunis, Sousse, Djerba, and the desert south before you travel.
• Bolt — Ride-hailing that operates in Tunis (and a few larger cities). Outside those zones you’ll rely on street taxis and shared louages, so keep a map handy.
• Google Translate — Download the French and Arabic packs for offline camera translation of menus, signs, and market prices.
• XE Currency — The Tunisian dinar (TND) is a closed currency you can’t buy in advance, so a live converter helps with market negotiations and card spending.
• WhatsApp — The default way Tunisians and guesthouses communicate. Confirm tours, transfers, and bookings here (pair with a VPN if call quality drops).
• Maps.me or Organic Maps — A solid offline-first backup for the desert routes where mobile data thins out.

---

Our Verdict

After comparing every eSIM provider that sells Tunisia plans against the country’s real networks — from the medinas of Tunis and Sousse to the beaches of Djerba and the desert tracks toward Matmata — here are our definitive recommendations:

Best overall: Airalo — Marketplace flexibility on Ooredoo Tunisia and Orange Tunisie, trusted by 20M+ travelers, and the best choice for North Africa multi-destination trips.

Best value: Saily — A top-tier Tunisian network, the lowest per-GB pricing, tethering allowed, and a clean app. The default choice for most Tunisia travelers.

Best unlimited data: Holafly — True unlimited data is especially valuable on multi-day desert tours and for anyone running a VPN continuously. Perfect for heavy users and content creators.

Cheapest daily rates: Trip.com — Ultra-affordable daily-reset plans for short Tunis and Djerba city breaks.

VPN reminder: Pair any Tunisia eSIM with NordVPN or Surfshark for more reliable VoIP calls, privacy on shared WiFi, and access to home streaming and banking.

Whichever provider you choose, install your eSIM before your flight. The moment you land in Tunis or Djerba, you’ll be connected — ready to line up a taxi, navigate to your riad, and start exploring without the passport-and-form registration queue.

Continuing across the region? See our guides to the best eSIM for Morocco, best eSIM for Egypt, and best eSIM for Africa. For VPN recommendations, see our best VPN for travel guide.

---

Frequently Asked Questions

Do eSIMs work in Tunisia?

Yes, eSIMs work well in Tunisia. The country has solid 4G LTE coverage from Ooredoo Tunisia, Orange Tunisie, and Tunisie Telecom across Tunis, Sousse, Hammamet, Djerba, and other tourist areas. Most travel eSIM providers connect to Ooredoo Tunisia or Orange Tunisie. Coverage is strongest in the coastal cities and thins out on desert routes toward Matmata, Douz, and the Sahara.

How much does an eSIM for Tunisia cost?

Tunisia eSIM plans start at around $4-5 for 1GB/7 days with providers like Saily and Airalo. Holafly offers unlimited data from approximately $19 for 5 days. For a typical 1-2 week trip covering Tunis, Sousse, and a desert excursion, budget roughly $10-25 for capped data or $27-50 for unlimited.

Which eSIM provider is best for Tunisia?

Airalo is the best overall for Tunisia, offering carrier flexibility on Ooredoo Tunisia and Orange Tunisie networks. Saily offers strong value per GB on a top-tier Tunisian network. For unlimited data — especially useful on multi-day desert tours where usage is hard to predict — Holafly removes data anxiety entirely.

Do I need a VPN in Tunisia?

A VPN is recommended rather than strictly required. VoIP calls (WhatsApp, FaceTime, Messenger) generally work in Tunisia but call quality can be throttled or inconsistent on congested mobile networks. A VPN improves call reliability, adds privacy on public and hotel WiFi, and lets you reach home banking and streaming services that geo-block foreign IP addresses. We recommend NordVPN or Surfshark. See our best VPN for travel guide.

Will my eSIM work on desert tours to Matmata and the Sahara?

Partially. Coverage is reliable in desert gateway towns like Tozeur, Douz, and Matmata village, but it thins to 3G or drops out entirely on the open desert tracks toward the Sahara dunes and remote oases. Download offline maps before you leave the paved roads. For multi-day 4x4 tours where you cross dead zones, unlimited data from Holafly is worth it so you can upload and browse whenever signal returns.

Can I use an eSIM instead of registering a Tunisian SIM card?

Yes, and that is one of the biggest reasons to choose an eSIM. A local Tunisian tourist SIM requires your passport and a registration form completed in person at an Ooredoo, Orange, or Tunisie Telecom shop. An eSIM is data-only and needs no in-country registration — you install it before your flight and connect automatically on arrival at Tunis-Carthage or Djerba-Zarzis airport.

Does eSIM coverage work on Djerba and the coastal resorts?

Yes. Djerba, Sousse, Hammamet, Monastir, and Tabarka all have dependable 4G LTE in the resort zones and town centers. You can expect roughly 20-40 Mbps on urban 4G — plenty for maps, messaging, translation, and uploading beach photos. Signal is weakest inside thick-walled medina alleys and on the quieter stretches of the island interior.