Turkcell, Vodafone and Turk Telekom all reach the Black Sea coast, and your eSIM rides one of them as its host. Along the shoreline and the coastal highway you get dense 4G, with 5G arriving in the built-up stretches. But almost nobody comes to Trabzon to stay in Trabzon, and the moment you turn inland the picture changes completely. Turkcell generally has the widest rural reach here, which is the network that matters once you are in the valleys.
Every reason to visit Trabzon is up a mountain valley, and that is the whole story.
Sumela Monastery clings to a cliff face at around 1,200 m in the Altindere valley, roughly 50 km inland. The road up follows a gorge, and coverage along it is intermittent - fine in the villages, gone between them. At the monastery itself you are against a rock wall with sky on one side only.
Uzungol, the lake in its bowl of forested peaks, and Ayder - technically in Rize province, about two hours away at 1,300 m - are further up the same kind of terrain. The yayla roads that link the high pastures are single-track, steep and switchbacked, and they lose signal for long stretches.
Two practical rules follow, and locals treat both as obvious:
- Download offline maps before you leave the coast. Not as a convenience. These are mountain roads where a wrong turn costs an hour and where "I'll look it up when I get there" fails.
- Weather closes roads. Fog in the Altindere valley is routine and can reduce the Sumela approach to walking pace; snow shuts the high yayla roads outright from late autumn. Check conditions the morning you go, not the night before, and have a fallback plan for the day.
One national rule is worth a paragraph even though it rarely touches a two-week visitor. Buy a Turkish SIM and use it in a foreign phone past the grace period - usually quoted as 120 days - and the device is blocked nationwide, whichever operator you then try. Lifting the block costs real money and normally requires Turkish residency papers.
It is triggered by the local SIM, not by being in the country, so roaming and travel eSIMs never enter the scheme. Relevant only if Trabzon is a base rather than a stop, in which case read the BTK rules as they stand rather than as a reseller describes them.
Beyond the valleys above:
Sumela's interior. The rock-cut church and the cave chapel are inside a cliff. Nothing works, and that is fine - it is one of the few places where being offline suits the room.
The Zigana pass and the old Silk Road route south toward Gumushane climb over 2,000 m through tunnels and cloud.
Boztepe, the hill above the city, is fine at the top with a clear view over the Black Sea, patchy on the wooded approaches.
On the water. Black Sea boat trips lose the shore quickly.
- A weather app that shows cloud base and rain radar, not just a daily icon. In this region the difference between a spectacular Sumela visit and a grey wall is a few hundred metres of cloud, and it changes hourly.
- Offline maps of the valleys, as above.
- BiTaksi covers the main Turkish cities; in Trabzon and especially in the mountains, dolmuses and arranged transfers do more of the work. Most visitors book a driver or a tour for Sumela and Uzungol, because the roads are genuinely demanding.
- Translation with camera. English is thinner here than on the Mediterranean coast. Arabic, on the other hand, is widely catered for - see below.
Trabzon Airport (TZX) sits right on the coast about 6 km east of the centre, which makes it one of the easier arrivals in Turkiye - you are in town in fifteen minutes. It takes domestic flights plus a growing number of Gulf routes.
The coastal highway makes onward travel simple in principle, but note the distances: Sumela is around an hour and a half each way, Uzungol about two hours, Ayder around two. These are day trips, not afternoon excursions.
Front-loaded rather than large. You will download maps, routes and offline content before each mountain day and then use very little of it while you are up there.
For a week, 1GB per 3 days is a fair baseline, with headroom for the pre-download habit. Top-ups run from your dashboard. Rural reach differs more between the host networks here than anywhere else in the country, which the best eSIM for Turkey guide goes into.
Rain gear, in every season. This is the wettest region in Turkiye and it rains in July. A proper waterproof, not a fashion jacket, and shoes with grip - Sumela's approach is steep, wet stone and the yayla paths are mud as often as not.
Layers for altitude. It can be 27C on the coast and 14C at Ayder on the same afternoon, and the mountains hold cloud even when the sea is clear.
Modest dress for Sumela, which is a monastery, and for the mosques in town.
Sumela from the valley floor, before you climb - the monastery hanging on the cliff face with forest below is the shot, and it is better from a distance than from inside. Go early: summer hours run roughly 08:00 to 19:00 and shorten to 17:00 in winter, and the morning light hits the cliff before the cloud builds.
Uzungol at dawn, with mist on the lake and the wooden houses reflected. Midday here is crowded and flat; the hour after sunrise is the reason to stay overnight rather than day-trip.
Ayder's high pastures in summer, when the yayla houses are occupied and the meadows are in flower.
The tea terraces along the coast east of Trabzon - the hillsides here grow most of Turkiye's tea, and the geometry of the plantations is a photograph in itself.
Hagia Sophia of Trabzon, the 13th-century church with its frescoes, down by the sea.
Trabzon was Trebizond, capital of the Empire of Trebizond - a Byzantine successor state that outlived Constantinople itself, surviving until 1461.
Sumela was founded in the 4th century and functioned until 1923; it has undergone extensive restoration and stabilisation work in recent years after rockfall risk closed sections of it.
The region grows the overwhelming majority of Turkiye's tea, and the local consumption rate is among the highest in the world.
And hamsi - Black Sea anchovy - is not merely a local fish but a regional identity, with its own festivals, songs and an alarming number of recipes including hamsi dessert.
July and August bring a large influx of visitors from the Gulf and the wider Arab world, drawn precisely by what northern Europeans find unremarkable: green mountains, cool air and rain. Uzungol and Ayder fill up, accommodation prices rise substantially, and Arabic menus and halal signage are standard. If you want the highlands quiet, come in June or September.
The hamsi season, roughly November to February, is when the coast is at its most characteristic - and when the weather is at its worst.
Yayla festivals through summer bring highland communities together in the high pastures, with kemence music and horon dancing.
The love: this is the Turkiye nobody pictures - deep green, misty, mountainous, wet, and completely unlike the beach coasts. Sumela is genuinely spectacular. The food is distinct from anywhere else in the country, the tea culture is real, and the yayla landscape in summer is beautiful in a way that surprises people expecting Anatolia.
The complaints are fair. The weather is a genuine gamble - a cloud-covered Sumela is a long drive for very little, and it happens often. Uzungol has been heavily over-developed and can feel like a car park with a lake behind it. Peak-season crowding in the high valleys is intense. The city of Trabzon itself is a working port rather than a pretty destination, and visitors expecting charm in the centre are usually disappointed. Distances are longer than they look on a map, because the roads climb.
Base yourself on the coast, take the mountain days as they come with the weather, and go in June or September.
Intermittently on the valley road, and effectively not inside the monastery itself, which is built into a cliff. Download maps and any booking details before you leave the coast.
Turkcell generally has the widest rural reach in Turkiye, which is the difference that counts on the yayla roads and up the valleys. In Trabzon city all three networks are comfortable.
Only if you use a Turkish SIM card in a foreign handset beyond the grace period, after which the device is blocked from Turkish networks. Roaming and travel eSIMs are outside that registration process. Check current BTK rules if you are staying months.
It works, but budget properly: Uzungol is about two hours each way and Ayder around two. Both are full-day trips from the coast, and staying overnight is what gets you the dawn light and the empty lake.
