My data is not connecting but I can still make calls.

[CharlesL]

I've recently switched my sim to a new iPhone. It says I have a connection but my data is not connecting to anything I want to use. I can still make calls and use WiFi so it's just my data not connecting. Can anyone help me out as I can't seem to make sense of anything on the o2 help pages?

[jonsie]

You need customer service to connect you to idata

In the meantime you can change your APN to

mobile.o2.co.uk

or text ACTIVE to 2020

then reboot the phone after saving the settings

If You need to call O2 then choose any of the options, fraud etc
Everything is taking longer due to the lockdown. Call centres and social distancing means limited staff to handle all the queries. Patience needed I'm afraid.
https://community.o2.co.uk/t5/Other-Products-and-Services/Coronavirus-Covid-19-Community-Help-and-Su...
Other numbers to try
0800 977 7337
0800 587 4005
0800 0901808
Download and use Skpe to call any of the free numbers
https://community.o2.co.uk/t5/Off-Topic/A-Guide-To-Skype/m-p/1305104/highlight/true#M181823

[MI5]

@CharlesL 

Check in Settings >Mobile data that it is on and then scroll down to see if the switch is on (green) for each of the apps you want to use data on.