4g network not working after September security patch

[Skynezz]

Dear samsung.

I updated my galaxy a51 8gb ram September security patch. There is network issue for 4G network. After complete update, i restarted my phone and then can't catch network in 4g. It's suddenly going 2g. Pls do something. What should i do.

[Amank2020]

working fine here

[Amank2020]

infact after updating i observed the network is way better and stable , could be some problem with your operator or just bad weather

[Skynezz]

I'll just swap sim card, let see what happened next

[Amank2020]

yes , before update my vodafone sim use to have like 2-3 bars and poor coverage and now its 4 bars strong at every corner of the house ... and the speed is also 40 mbps minimum on lte

[Nits]

yes network has improved drastically

[Skynezz]

Now working good after swap sim...

[cs-member13]

Dear Samsung Member,

Greetings from Samsung Customer Support!

To resolve network issue please follow below given steps:-

1. Check network operators and select automatically (Settings> Connections> Mobile Network>Network operator> select automatically > Tap on OK > Registered on network).

2. Reset the device: settings >General Management > Tap on Reset.
Note: Before reset make sure to have back up of the data via Smart Switch Mobile App
(Install Smart Switch App > Open > Click on Memory Card Icon >Back Up option > Choose the data for Back up > Back Up).

If the issue still persist, kindly register your concern in Samsung Members app (Samsung Members app > Get help > Feedback > Error report/ask question).
Note: Please send device log files within 15 minutes of issue occurrence along with the exact issue details.

Thank you for writing to Samsung.

Warm Regards,
Samsung Customer Support