Signal bars, or no network at all?
“No signal” hides two different faults. The screen shows bars, but nothing loads? It is almost always data roaming, turned off on the phone or excluded from the plan. No network shows at all, or the iPhone says “No Service” or “Searching”? It is network selection that is stuck, or a place where nothing gets through. The steps are not the same.
Has your plan just been activated?
In Switzerland, your plan works through roaming, which can take a few hours to open after activation. Your phone doesn’t connect straight away? No need to cross back over the border: wait before changing your settings.
Which steps, and in what order?
First data roaming, then aeroplane mode, then a restart, then automatic network selection. Choosing the network by hand comes as a last resort. Five steps, from the most likely to the rarest:
- Check data roaming. The setting is called “Data Roaming” on iPhone and “Roaming” on Android: it must be turned on. Many phones turn it off by default. Without it, nothing loads, even with five bars. This setting has its own guide (in French), for those who want to turn it off instead.
- Aeroplane mode, for about ten seconds. Also called flight mode or airplane mode: turn it on, wait, turn it off. The phone searches for a network again.
- Restart the phone. Useful when aeroplane mode wasn’t enough, often after a tunnel or a long stretch without signal. The phone offers a carrier settings update? Install it: on iPhone, it is in Settings, General, About; on Android, it comes with the system update.
- Check that network selection is set to automatic. A network chosen by hand stays chosen, even when it no longer works. On iPhone: Settings, Mobile Data (Mobile Service, depending on the iOS version), Network Selection, “Automatic” switch turned on. On Android, the path depends on the brand: the paths, in the guide to the network at the border.
- As a last resort, choose the network by hand. Turn off automatic and try another Swiss network from the list. Near the border, the phone sometimes stays connected to a distant or overloaded mast, while another one works better. Turn automatic back on as soon as you leave the area: a forced network no longer follows your journeys, and service stops on the other side of the border.
Mobile data works, but calls don’t?
Check that your phone supports VoLTE, calls over 4G, and that it is turned on. The old 2G and 3G networks are being switched off: calls go over 4G, and a phone without VoLTE turned on can no longer call where only 4G is left. On iPhone, the option is in Settings, Mobile Data, your plan, Voice & Data. On Android, it is usually on by default; if your phone offers the option, it is in the mobile network settings, under “VoLTE” or “4G calling”. It doesn’t appear, or nothing changes? Write to us with your phone model: we check your plan’s settings. Meanwhile, Wi-Fi calling (in French) can take over, if your phone allows it.
Which phones support VoLTE?
Orange lists 430 compatible models. The list comes from Orange’s page on compatible phones (in French), checked on 4 November 2026.
See all 430 models, brand by brand
Apple 39 models
iPhone 6, iPhone 6 Plus, iPhone 6s, iPhone 6s Plus, iPhone 7, iPhone 7 Plus, iPhone 8, iPhone 8 Plus, iPhone 11, iPhone 11 Pro, iPhone 11 Pro Max, iPhone 12, iPhone 12 Mini, iPhone 12 Pro, iPhone 12 Pro Max, iPhone 13, iPhone 13 Mini, iPhone 13 Pro, iPhone 13 Pro Max, iPhone 14, iPhone 14 Plus, iPhone 14 Pro, iPhone 14 Pro Max, iPhone 15, iPhone 15 Plus, iPhone 15 Pro, iPhone 15 Pro Max, iPhone 16, iPhone 16 Plus, iPhone 16 Pro, iPhone 16 Pro Max, iPhone 16e, iPhone SE, iPhone SE 2020, iPhone SE 2022, iPhone X, iPhone XR, iPhone XS, iPhone XS Max.
Samsung 121 models
Galaxy A02s, Galaxy A03, Galaxy A3 2017, Galaxy A03s, Galaxy A04s, Galaxy A5 2017, Galaxy A05s, Galaxy A6, Galaxy A6+, Galaxy A7, Galaxy A7 2018, Galaxy A8, Galaxy A8 Dual SIM, Galaxy A9, Galaxy A10, Galaxy A12, Galaxy A13 4G, Galaxy A13 5G, Galaxy A14 4G, Galaxy A14 5G, Galaxy A15 4G, Galaxy A15 5G, Galaxy A16 4G, Galaxy A16 5G, Galaxy A20e, Galaxy A21s, Galaxy A22 5G, Galaxy A23 5G, Galaxy A24, Galaxy A25 5G, Galaxy A26 5G, Galaxy A31, Galaxy A32 4G, Galaxy A32 5G, Galaxy A33 5G, Galaxy A34 5G, Galaxy A35 5G, Galaxy A36 5G, Galaxy A40, Galaxy A41, Galaxy A42 5G, Galaxy A50, Galaxy A51 4G, Galaxy A51 5G, Galaxy A52, Galaxy A52 5G, Galaxy A52s 5G, Galaxy A53 5G, Galaxy A54 5G, Galaxy A55 5G, Galaxy A56 5G, Galaxy A56 5G (256 GO), Galaxy A70, Galaxy A71, Galaxy Fold, Galaxy J3 2017, Galaxy J4+, Galaxy J5 2017, Galaxy J6, Galaxy J6+, Galaxy Note 8, Galaxy Note 9, Galaxy Note 10, Galaxy Note 10 Lite, Galaxy Note 10+, Galaxy Note 20 4G, Galaxy Note 20 5G, Galaxy Note 20 Ultra 5G, Galaxy S7, Galaxy S7 Edge, Galaxy S8, Galaxy S8+, Galaxy S9, Galaxy S9+, Galaxy S10, Galaxy S10 5G, Galaxy S10+, Galaxy S10e, Galaxy S20 4G, Galaxy S20 5G, Galaxy S20 FE 5G, Galaxy S20 Ultra 5G, Galaxy S20+ 4G, Galaxy S20+ 5G, Galaxy S21 5G, Galaxy S21 FE 5G, Galaxy S21 Ultra 5G, Galaxy S21+ 5G, Galaxy S22 5G, Galaxy S22 Ultra 5G, Galaxy S22+ 5G, Galaxy S23 5G, Galaxy S23 FE 5G, Galaxy S23 Ultra 5G, Galaxy S23+ 5G, Galaxy S24 5G, Galaxy S24 FE 5G, Galaxy S24 Ultra 5G, Galaxy S24+ 5G, Galaxy S25 5G, Galaxy S25 Edge 5G, Galaxy S25 Ultra 5G, Galaxy S25+ 5G, Galaxy XCover7 5G, Galaxy XCover7 Pro 5G, Galaxy XCover 4, Galaxy XCover 4S, Galaxy XCover 5, Galaxy XCover 6 Pro 5G, Galaxy XCover Pro, Galaxy Z Flip, Galaxy Z Flip3 5G, Galaxy Z Flip4 5G, Galaxy Z Flip5 5G, Galaxy Z Flip6 5G, Galaxy Z Flip 5G, Galaxy Z Fold2 5G, Galaxy Z Fold3 5G, Galaxy Z Fold4 5G, Galaxy Z Fold5 5G, Galaxy Z Fold6 5G.
Google 20 models
Pixel 4a, Pixel 5 5G, Pixel 6 5G, Pixel 6 Pro 5G, Pixel 6a 5G, Pixel 7 5G, Pixel 7 Pro 5G, Pixel 7a 5G, Pixel 8 5G, Pixel 8 Pro 5G, Pixel 8a 5G, Pixel 9 5G, Pixel 9 Pro 5G, Pixel 9 Pro Fold 5G, Pixel 9 Pro XL 5G, Pixel 9a 5G, Pixel 10, Pixel 10 Pro, Pixel 10 Pro Fold, Pixel 10 Pro XL.
Xiaomi 65 models
Xiaomi 11 Lite 5G NE, Xiaomi 11T 5G, Xiaomi 11T Pro 5G, Xiaomi 12 5G, Xiaomi 12 Lite 5G, Xiaomi 12 Pro 5G, Xiaomi 12T 5G, Xiaomi 12T Pro 5G, Xiaomi 13 5G, Xiaomi 13 Pro 5G, Xiaomi 13T 5G, Xiaomi 13T Pro 5G, Xiaomi 14 5G, Xiaomi 14 Ultra 5G, Xiaomi 14T 5G, Xiaomi 14T Pro 5G, Xiaomi 15 5G, Xiaomi 15 Ultra 5G, Mi 9 SE, Mi 10 5G, Mi 10T 5G, Mi 10T Lite 5G, Mi 10T Pro 5G, Mi 11 5G, Mi 11 Lite 5G, Mi 11 Ultra 5G, Mi 11i 5G, Mi Mix 2S, Mi Note 10, Mi Note 10 Lite, Redmi 9, Redmi 9C NFC, Redmi 9T, Redmi 10, Redmi 10 2022, Redmi 10C, Redmi 12 5G, Redmi 12C, Redmi 13C, Redmi 14C, Redmi A3, Redmi A5, Redmi Note 8T, Redmi Note 9, Redmi Note 9 Pro, Redmi Note 9T 5G, Redmi Note 10 5G, Redmi Note 10 Pro, Redmi Note 10S, Redmi Note 11, Redmi Note 11 Pro 5G, Redmi Note 11S 4G, Redmi Note 11S 5G, Redmi Note 12 4G, Redmi Note 12 5G, Redmi Note 12 Pro 5G, Redmi Note 12 Pro+ 5G, Redmi Note 13 4G, Redmi Note 13 5G, Redmi Note 13 Pro 5G, Redmi Note 13 Pro+ 5G, Redmi Note 14 4G, Redmi Note 14 5G, Redmi Note 14 Pro 5G, Redmi Note 14 Pro+ 5G.
Oppo 29 models
A9 2020, A16s, A53s, A54 5G, A57 4G, A57s 4G, A72, A74 5G, A77 5G, A94 5G, Find N2 Flip 5G, Find X2 Lite 5G, Find X2 Neo 5G, Find X2 Pro 5G, Find X3 Lite 5G, Find X3 Neo 5G, Find X3 Pro 5G, Find X5 5G, Find X5 Lite 5G, Find X5 Pro 5G, Reno8 5G, Reno8 Lite 5G, Reno8 Pro 5G, Reno 2, Reno 2Z, Reno 4 Pro 5G, Reno 4Z 5G, Reno 6 5G, Reno 6 Pro 5G.
Honor 31 models
Honor 10 Lite, Honor 20, Honor 20 Pro, Honor 50 5G, Honor 70 5G, Honor 70 Lite 5G, Honor 90 5G, Honor 90 Lite 5G, Honor 90 Smart 5G, Honor 200 5G, Honor 200 Lite 5G, Honor 200 Pro 5G, Honor 200 Smart 5G, Honor 400 5G, Honor 400 Lite 5G, Honor Magic 4 Lite 5G, Honor Magic 5 Lite 5G, Honor Magic 5 Pro 5G, Honor Magic 6 Lite 5G, Honor Magic 6 Pro 5G, Honor Magic 7 Lite 5G, Honor Magic 7 Pro 5G, Honor Magic 4 Pro 5G, Honor Magic 5G, Honor Magic V3 5G, Honor Magic VS 5G, Honor View 20, Honor X6 4G, Honor X6b 4G, Honor X7, Honor X8 5G.
Motorola 27 models
Edge 40 Neo, Edge 50 Neo 5G, Edge 50 Pro 5G, Edge 30 Neo 5G, Moto Edge 20 Lite 5G, Moto G7 Plus, Moto G7 Power, Moto G8 Plus, Moto G9 Play, Moto G23, Moto G32, Moto G34 5G, Moto G35 5G, Moto G50 5G, Moto G53 5G, Moto G54 5G, Moto G56 5G, Moto G62 5G, Moto G73 5G, Moto G75 5G, Moto G85 5G, Moto G Pro, Razr 40 Ultra 5G, Razr 50 5G, Razr 50 Ultra, ThinkPhone, ThinkPhone 25 5G.
Huawei 25 models
Mate 10 Pro, Mate 20, Mate 20 Lite, Mate 20 Pro, Mate 40 Pro 5G, Nova 5T, P20, P20 Dual SIM, P20 Pro, P20 Pro Dual SIM, P30, P30 Lite, P30 Pro, P40 5G, P40 Lite 5G, P40 Lite E, P40 Pro 5G, P Smart, P Smart 2019, P Smart 2020, P Smart 2021, P Smart Z, Y5 2019, Y6 2019, Y6P.
Sony 19 models
Xperia 1, Xperia 5, Xperia 5 II 5G, Xperia 5 III 5G, Xperia 5 IV 5G, Xperia 5 V 5G, Xperia 10, Xperia 10 II, Xperia 10 III 5G, Xperia 10 IV 5G, Xperia 10 Plus, Xperia 10 V 5G, Xperia L3, Xperia L4, Xperia XA2, Xperia XZ1, Xperia XZ2, Xperia XZ2 Compact, Xperia XZ3.
OnePlus 5 models
OnePlus 9 5G, OnePlus 9 Pro 5G, OnePlus 10 Pro 5G, Nord 2 5G, Nord 2T 5G.
Fairphone 4 models
Fairphone 3 / 3+, Fairphone 4 5G, Fairphone 5 5G, Fairphone 6 5G.
Crosscall 12 models
Action-X5, Core-M4, Core-M5, Core-S4, Core-S5, Core-X4, Core-X5, Core-Z5 5G, Stellar-M6 5G, Stellar-M6E 5G, Stellar-X5 5G, Trekker X4.
TCL 4 models
TCL 20 SE, TCL 40R 5G, TCL 306, TCL 406.
Vivo 4 models
V21 5G, Y21S, Y72 5G, Y76 5G.
Realme 2 models
9I 5G, C31.
Doro 5 models
Doro 6880, Doro 7080, Doro 8062, Doro 8220, Leva L30.
Alcatel 1 model
Alcatel 1 2021.
Orange 8 models
Hapi 12, Hapi 52, Neva First, Neva Jet, Neva Leaf, Neva Mini, Neva Sparkle, Neva Start.
Sosh 1 model
Soshphone.
Cocomm 5 models
DT 200, DT 250, F360, F740, F900.
Ecom 2 models
Smart-EX02, Smart-EX03.
Mobiwire 1 model
Hinto 2.
Your model isn’t on it? It may still support VoLTE: Orange only lists the models it has tested, and the newest ones are added after their release. On 4 November 2026, the list stops at the iPhone 16e. The manufacturer’s specifications will tell you.
Orange doesn’t publish a country-by-country list: this one applies to its network. Your phone is on it and can’t make calls in Switzerland? Go through the steps above again, then write to us with its model.
What if the phone has no signal anywhere?
Deep in the Doubs gorges or on the way down some mountain passes, sometimes no network gets through. For an emergency, a phone that can’t reach its own operator searches for another network. Where none gets through, no call goes out. Keep the Swiss emergency numbers (in French) in mind. For ordinary calls, Wi-Fi calling (in French) can take over.
Which networks appear in the list in Switzerland?
Three, as of 1 September 2026: Swisscom, Sunrise and Salt. These are the Swiss networks the phone shows when you choose the network by hand. They sometimes appear as a number rather than a name. None of the three appears? There is probably no coverage where you are.
Should you change operator?
Not because you have no signal. Go through the five steps above first: most of the time, one setting is enough. And no French operator will give you signal where there is no mast. With the same phone, you would have the same problem elsewhere.
The question of the operator comes up when your signal is very good, and it is the bill that is the problem: calls made from Switzerland, included or charged depending on the plan.
With a Flytel plan, once roaming is open, the phone switches to a Swiss network by itself, with data roaming turned on. Wi-Fi calling is included in every Flytel plan: turn it on in your phone’s settings. You are a Flytel customer and your phone has no signal? The five steps apply as they are. Nothing changes? Write to customer service from the contact page, in English or in French: we reply within 24 hours.
Frequently asked questions
Check data roaming first: it is often turned off on the phone, or excluded from the plan. If no network shows at all, the cause lies elsewhere: network selection, or a place with no coverage. The steps are not the same.
Turn on aeroplane mode for about ten seconds, then turn it off: the phone searches for a network again.
Dial the number in international format, with the + and the country code: a number saved without its country code doesn’t work from one country to the other. Then aeroplane mode for about ten seconds, and a restart. Has your plan just been activated? In Switzerland, it works through roaming, which can take a few hours to open after activation. Also check that your phone supports VoLTE, calls over 4G: the list of models is on this page. Within reach of Wi-Fi, Wi-Fi calling can take over, if your phone allows it. Nothing changes? Write to Flytel: we check your plan’s settings.
After aeroplane mode, restart the phone, then check that network selection is set to automatic. Only as a last resort, turn off automatic and choose another Swiss network from the list: near the border, the phone sometimes stays connected to a distant or overloaded mast, while another one works better. Turn automatic back on as soon as you leave the area, because a forced network no longer follows your journeys.
