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Original topic:

5g and 4g drop signal

(Topic created on: 29-09-2021 05:43 PM)
AlexRo
Explorer
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Galaxy S21 Series
Hi everybody ! From few days my galaxy s21 ultra make a big problem. When it does not find 5g or 4g signal, the phone disconnect my network and I can't use phone for calls or internet. The phone don't go from 5g or 4g to h+ or h and write my network ( vodafone uk ) not avalaible. Please help me
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6 REPLIES 6
rogersdave77
Voyager
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Galaxy S21 Series
Check your network mode is set to auto connect Screenshot_20210929-175103_Call settings.jpg
BandOfBrothers
Superuser II
Superuser II
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Galaxy S21 Series

Does the happen everywhere or in a particular place @AlexRo  ?

Check your Vodafone UK masts via https://www.vodafone.co.uk/explore/network/uk-coverage-map. 

Can you try your sim card in another phone and another sim card in your phone.

A Samsung Experience Store  / Samsung Service Centre can check your phone.

Also you could reset the network settings via Settings, General Management,  reset, reset network settings. 


Current Phone > Samsung Z Fold³ 5G.

AlexRo
Explorer
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Galaxy S21 Series
It isScreenshot_20210929-180108_Call settings.jpgScreenshot_20210928-132805_One UI Home.jpg
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AlexRo
Explorer
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Galaxy S21 Series
Just in some place doing, but in past in same places go from 4g to h+ or h, but not disconnect from the network. I could make a call. I tried diffrent sim from diffrent company and same problem I have with it. Sometimes when I put only in 3g, the signal come back but if I keep on 4g or 5g, the signal come very slow back in few minutes or more then minutes but I can't make any call ring. Screenshot_20210928-132805_One UI Home.jpg
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BandOfBrothers
Superuser II
Superuser II
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Galaxy S21 Series

Ok go into your Samsung Members App and tap on the GetHelp at the bottom and then Diagnostics and check your phone over.

If that does not help then seek support from your most local Samsung Experience Store  / Samsung Service Centre 


Current Phone > Samsung Z Fold³ 5G.

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AlexRo
Explorer
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Galaxy S21 Series
Thank you