Enter my sms server with dual sim card

Help Fairphone 2
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1

Hi,
I have a Fairphone 2 with dual sim card - one for France, one for UK. I can’t send text messages to some contacts but can send them fine to most of my contacts. When it doesn’t work I get the message Error 38.
My operator in France said I should enter my sms server number, and gave me the number. But I can’t find where to enter it. If this is the issue, it still isn’t clear to me why texts should work with some people but not others. Any ideas?

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You can check (or update) that number in the settings of some SMS Apps.
What OS are you using? What exactly does it say in About phone - Build number?

If not in the SMS App settings, you can enter this info for SIM1 in the test menu you should get when dialing *#*#4636#*#* - Phone info - SMSC. … You have to swap the SIMs to enter it for the second SIM that way.

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Thanks for your reply. I’m using Android version 6.0.1.
Under About phone the build number is FP2-gms-17.10.2 release-keys.

Thanks for info re test menu. I had tried that but hadn’t realised it was just for SIM1 (it has my UK sms server number since SIM1 is my UK SIM card). I guess that would mean I’d have to keep swapping my SIM cards around and re-entering the sms server number every time I switch country?

Can’t fairphone / SMS apps (I’m not sure where the problem lies) handle dual SIMs with different SMS server numbers?

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The SMSC is stored on the SIM card itself so you only have to enter it once, even when swapping the cards.

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Android can handle this situation once set up correctly for each SIM independently. One of the things that Android isn’t so good at, is editing stuff on SIMs - and when there’s two of them, it becomes quite user-unfriendly. There’s some more detail on how to get it to behave in this topic:

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