Dual SIM and verification codes: which number gets the text?
In short
- A code goes to the number you typed into the app, whichever line is your default.
- Apple says Dual SIM lets you make and receive calls and texts on both numbers.
- If codes stop on one line, check the line is turned on, has signal, and can roam if you’re abroad.
Two numbers on one phone are handy for keeping personal, work and sign-up numbers apart. Here’s how codes behave.
Which line gets the code
The one with the number you entered in the app. Your default line only decides which number your phone uses when you call or text first.
iPhone
Apple says Dual SIM lets you have two active numbers that both make and receive calls and texts. Choose the default line in the Mobile Service (or Cellular) settings, and pick which line to text from in Messages.
Android
Android phones list both SIMs in their network settings, where you choose the SIM for calls, texts and data. Both lines receive texts while they’re turned on.
If a code doesn’t arrive on one line
- Check the line is turned on.
- Check it has signal: the two SIMs can be on different networks.
- Abroad, check roaming is on for that line: see codes when you’re abroad.
- Check the app has the right number and country code: see phone number formats.
A second line just for sign-ups
Some people keep a second SIM only for sign-ups. If you only need a code now and then, a one-time number from ReserveSMS does that job without a second plan: from $1, and the money goes back to your balance if no code arrives within 20 minutes.
Common questions
Which SIM gets the verification code on a dual SIM phone?
The one with the number you entered in the app, whichever line is your default.
Can both SIMs receive texts at the same time?
Yes, while both lines are turned on. Apple says Dual SIM lets you make and receive calls and texts on both numbers.
Why isn’t my second SIM getting codes?
Check the line is turned on, has signal, and has roaming on if you’re abroad.