https://community.o2.co.uk/t5/Tech-Support/How-long-are-SMS-stored-when-phone-is-switched-off/m-p/1469277#M8446 <P><a href="https://community.o2.co.uk/t5/user/viewprofilepage/user-id/4531095">@HelenC</a>&nbsp;</P><P>I believe the server will attempt to deliver an SMS for 14 days and an MMS for 7 days.</P> Sat, 03 Jul 2021 09:00:52 GMT MI5 2021-07-03T09:00:52Z https://community.o2.co.uk/t5/Tech-Support/How-long-are-SMS-stored-when-phone-is-switched-off/m-p/1469267#M8445 My understanding is that SMS will expire if not delivered within a certain time frame. Can you tell me what that time frame is please? Search gave a thread from 2013 which may not be up to date now.<BR /><BR />I am planning to leave my phone switched off for a longer period, and just want to check whether I’ll need to switch it on at some point to make sure no SMS get lost.<BR /><BR />Thanks. Sat, 03 Jul 2021 07:54:21 GMT https://community.o2.co.uk/t5/Tech-Support/How-long-are-SMS-stored-when-phone-is-switched-off/m-p/1469267#M8445 HelenC 2021-07-03T07:54:21Z https://community.o2.co.uk/t5/Tech-Support/How-long-are-SMS-stored-when-phone-is-switched-off/m-p/1469277#M8446 <P><a href="https://community.o2.co.uk/t5/user/viewprofilepage/user-id/4531095">@HelenC</a>&nbsp;</P><P>I believe the server will attempt to deliver an SMS for 14 days and an MMS for 7 days.</P> Sat, 03 Jul 2021 09:00:52 GMT https://community.o2.co.uk/t5/Tech-Support/How-long-are-SMS-stored-when-phone-is-switched-off/m-p/1469277#M8446 MI5 2021-07-03T09:00:52Z