4G signal meter

[MartinN]

I'm puzzled by the signal meter. Right now the meter doesn't say 5g or 4g and I just has 3 dots rather than bars. Earlier today the bars were replaced by what looked like exclamation marks. I cannot make calls. I'd appreciate any advice. I should add that for reasons which I don't understand, and since I got a 5G sim along with a new iPhone 13, I have a primary and a secondary voice line although I only have one phone number?

[MI5]

@MartinN 

Have you activated the sim if a new one?

You need to do a sim swap if so Guide: Sim Swap: a mini guide 2017 update 

Otherwise, check for issues in your area O2 Service Status

Guide here Guide: Is the network down for me or everyone? 

[gmarkj]

Sounds like there is no data connection @MartinN  - that is what drives the 4G/5G symbol. The bars or dots just mean you are connected to the network.

I am a little confused about having a second line but only 1 number - do you mean you have a watch or an eSim?

[MartinN]

My Iphone says I have two voice lines, primary and secondary. the secondary is on end d the primary off. I believed I have two because I have a traditional sim and and an e sim, but I'm not sure. If I put both lines which I understood maximised call coverage then the bars on the 4G signal turn into exclamation marks. 

[Enlli · Accepted solution]

If you have a traditional SIM and an Esim they need to be either on separate networks or separate numbers they can't be the same