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S25 ultra wont work unless connected to wifi

(Topic created on: 23-04-2025 07:01 AM)
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jooly1965
Journeyman
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Got the new s25 ultra, in Cyprus and mobile data won't work, can't send texts unless connected to wifi, same sim from old phone and never had a problem. Tried all the obvious, any suggestions?
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Solution
arianwen27
Black Belt 
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Something to try. Settings, connections, mobile networks, access point names, dots top right, reset to default, reboot.

Something else to try, mobile networks, network operators, disable auto, wait, select your carrier. Might work

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jooly1965
Journeyman
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All sorted now thank you. My phone was set to auto connect for network provider, when I took this off and chose a different one it worked. I assumed with having auto select it would pick the best one!

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14 REPLIES 14
Solution
arianwen27
Black Belt 
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Something to try. Settings, connections, mobile networks, access point names, dots top right, reset to default, reboot.

Something else to try, mobile networks, network operators, disable auto, wait, select your carrier. Might work
jooly1965
Journeyman
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Thank you, done all that and still no good
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arianwen27
Black Belt 
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Have you tried using another sim card? Like one of a friend or family member to see if their sim works?

Also in samsung members, in the support tab, you could try running a diagnostic and seeing if the mobile networks section tells you anything
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jooly1965
Journeyman
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Yes I tried my husbands and it wouldn't work, but it's working in his phone, which makes me think it's something in the phone settings.
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Piper123
Samsung Members Star ★
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Hey there and welcome to the Samsung UK and EU Community Customer to Customer Forum

May I please ask where you bought your device from (which retailer not country)?

Could the device have been blacklisted?
S24 Ultra
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jooly1965
Journeyman
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I bought direct from samsung
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-Robot-
Samsung Members Star ★
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Is roaming turned on? If you are overseas or you in Cyprus and gor phoen from Samsung?

If latter take it back to the store
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keith30
Legend
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If you brought it in Cyprus and your based in the UK that's the reason your having problems as it probably made to work in that country. Never buy a phone abroad.
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jooly1965
Journeyman
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I bought in uk, on holiday in Cyprus and never had a problem before
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