[Q] Not recognising SIM card?

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Has anyone else had a recurring issue where the One V won't recognise their SIM card until they restart it a few times? I'm not sure if it's a ROM problem or if I should get a replacement unit.

Any way to debug and pin it down to software or hardware?

Solved my problem. If anyone experiences this, your SIM is a bit old. I went to my provider and got a new 128k SIM. It looks very different to my old one and works every time with the One V.

Just seems the phone isn't as compatible with older SIMs.

Yeah this happened to me too.
Got an error message too that the sim was not recognized and the phone had to be rebooted.
Just started working on its own after a few days...

We have that issue with all our One V at my store. All we do is a reboot and it will read the sim.

Had that with my past 4 pieces of one V (all returned to shop) because of this issue. I've replaced my old (~3 years sim) with a new one from 2012 but apparently, Orange doesn't know what 128k sim is xD. So I was forced to drop my 5th model and get my money back. Oddly is that my first One V (that had factory problems - light leakage, sensor problems) had no problem with my old sim card.