https://community.bt.com/t5/BT-Mobile/Doro-phone-can-sent-text-but-don-t-arrive/m-p/2470419#M25602 <P>Recently my mother's doro phone has an issue. The phone can received texts but when she sends a text the phone said it has been sent but it never arrived. She has a unlimited text plan. I checked the SMS Centre number, seems correct and I put my SIM in her phone and it's working. So I bought another Doro phone for her but the new one has the same problem. Do you think it could be the SIM itself?&nbsp;</P><P>Any ideas will be very helpful, thanks.</P> Sat, 12 Sep 2026 15:43:04 GMT Tonymay 2026-09-12T15:43:04Z https://community.bt.com/t5/BT-Mobile/Doro-phone-can-sent-text-but-don-t-arrive/m-p/2470419#M25602 <P>Recently my mother's doro phone has an issue. The phone can received texts but when she sends a text the phone said it has been sent but it never arrived. She has a unlimited text plan. I checked the SMS Centre number, seems correct and I put my SIM in her phone and it's working. So I bought another Doro phone for her but the new one has the same problem. Do you think it could be the SIM itself?&nbsp;</P><P>Any ideas will be very helpful, thanks.</P> Sat, 12 Sep 2026 15:43:04 GMT https://community.bt.com/t5/BT-Mobile/Doro-phone-can-sent-text-but-don-t-arrive/m-p/2470419#M25602 Tonymay 2026-09-12T15:43:04Z https://community.bt.com/t5/BT-Mobile/Doro-phone-can-sent-text-but-don-t-arrive/m-p/2470450#M25603 <P>Welcome to the Community, <SPAN style="background: var(--ck-color-mention-background); color: var(--ck-color-mention-text);"><a href="https://community.bt.com/t5/user/viewprofilepage/user-id/351297">@Tonymay</a></SPAN>&nbsp;</P> <P>Is it all numbers that are affected here, or only certain ones?</P> <P>Could you please let me know what message centre number is showing, too?</P> <P>Just as another thing to check, has she ever used an iPhone in the past?</P> <P>If a customer switches from an iPhone to a different kind of handset, they need to de-register their number from iMessage as this can affect their ability to send texts to other iMessage users</P> <P>You can sort this out here:</P> <P><A href="https://selfsolve.apple.com/deregister-imessage/" target="_blank">Deregister and Turn Off iMessage - Apple Support</A></P> <P>Peter</P> Sun, 13 Sep 2026 09:10:44 GMT https://community.bt.com/t5/BT-Mobile/Doro-phone-can-sent-text-but-don-t-arrive/m-p/2470450#M25603 Peter_W 2026-09-13T09:10:44Z