topic Re: upgrade to G4 in Mobile

upgrade to G4

273rex79B — Sat, 29 Nov 2025 13:54:36 GMT

I am upgrading from G3 to G4 have swapped SIM and memory card to G4 phone.

New phone will receive incoming calls and messages but will not allow outgoing

calls or messages.

Re: upgrade to G4

Gliwmaeden2 — Sat, 29 Nov 2025 14:10:02 GMT

@273rex79B, you are referring to your mobile phone service - you won't be able to use Talktalk's mobile service any more. They stopped the service over the past month, so you won't be able to ring out.

You posted in the broadband area of the forum - I'll move the post to Mobile, but there's no staff support there, and none at weekends from Talktalk staff on the forum.

See this article about the ending of Talktalk mobile services:

https://help-centre.talktalk.co.uk/Manage_account/Leave_TalkTalk/Cancel_your_TalkTalk_Mobile_service

Re: upgrade to G4

fr8ys — Sat, 29 Nov 2025 14:06:00 GMT

Please see the pinned post at the top of the forum for details on how to access mobile support.

Do you still have a TalkTalk mobile account as these are or have ended?

You will need to phone though for support.

https://community.talktalk.co.uk/t5/Mobile/Do-you-need-help-with-your-TalkTalk-Mobile-service/m-p/3044800#M47772
Thank you.

Re: upgrade to G4

273rex79B — Sat, 29 Nov 2025 16:20:17 GMT

Hi Steve, thanks for your response, just to clarify a few points.

My old (very) G3 Samsung had an O2 pay as you go SIM for years.

Several years ago I took out a TalkTalk Fibre35 broadband account and all worked well with

the O2 SIM and my G3 Samsung.

Just purchased a G4 Samsung and transferred the O2 SIM and memory card to the new phone.

Incoming calls and texts OK, outgoing texts do not connect and outgoing calls reply with a message

to top up on pay as you go (O2).

All very strange.

Peter

Re: upgrade to G4

fr8ys — Sat, 29 Nov 2025 17:02:37 GMT

You will need to contact O2 for support.

This forum and help is for TalkTalk customers who experience issues with their TalkTalk products and services.

Your broadband would have no connection to your phone, sim, etc.

Re: upgrade to G4

Philile-TT — Mon, 01 Dec 2025 07:27:36 GMT

@fr8ys thank you for the support.