text messages sent when phone is off never arrive

[ChrisD27]

I really like Smarty except for one problem that re-occurs.  I don't keep my phone on all the time and, if someone sends me a text message when it's off, I sometimes don't get it.  I contacted Smarty about this issue when I first became aware of it last year, but they couldn't explain it or help.    Recently, when I turn my phone on, the text message icon appears in the top left corner, making me think a text will appear, but then there is nothing.  I have since found out a friend did send me texts that never arrived.  I don't have this problem when my phone is on - e.g., getting verification codes when making a purchase - and I never had this problem with any of the other networks I've used (Virgin, Asda, Three).  Any ideas or suggestions?  I use Google Messages, which is up-to-date, and Android 10 on a Moto G8 plus.

[Chalkychap]

Perhaps look at your Google Account information online, @ChrisD27. 

Check you don't have multiple devices using the same phone number in your Google Account.

[ChrisD27]

Thanks for the suggestion, but only my phone uses my phone number.

[MSF]

@ChrisD27  Are these messages sent via data rather than sms? I wonder if this is a Google issue rather than Smarty? Should your account not sync when you turn the phone back on?

[ChrisD27]

No, these are SMS messages, and it's the same messaging app I always used with other mobile services - used to be called Android Messages, now Google Messages (but you only know it's Google by going into settings - the app just calls itself 'Messages' ).  

[Chalkychap]

I wouldn't so sure, @ChrisD27. 

Google collect all sorts of information when you've got a Google Account, which would be the case with an Android handset.

Have you checked the information in your Google Account online?

[ChrisD27]

Yes, I've checked.  As I've said, I've never had this problem with other mobile services,a dn I've been using this app the whole time.