https://community.o2.co.uk/t5/Tech-Support/4G-not-working/m-p/1487001#M10900 <P>Hi, <a href="https://community.o2.co.uk/t5/user/viewprofilepage/user-id/4603561">@Sidsid1983</a>&nbsp;- which aspect is not working: voice, data, SMS?</P><P>If SMS - You could clean your SIM card (gently!), as explained in this&nbsp;<LI-PRODUCT title="Guide: Text Message Tips (not sent or received)" id="Guide028"></LI-PRODUCT>.</P><P>All the tips for signal troubleshooting are here: <LI-PRODUCT title="Guide: How can I sort out my network issues?" id="Guide018"></LI-PRODUCT>&nbsp;</P><P>Do use the O2 network checking tool in MyO2 and log your test by registering for updates (in the Guide too).</P><P>Finally, if it is just data that is not working, switching your phone settings to use 3G instead of 4G can sometimes help overcome this issue with an oversubscribed signal.</P><P>Good luck!</P> Sat, 11 Sep 2021 17:35:01 GMT pgn 2021-09-11T17:35:01Z https://community.o2.co.uk/t5/Tech-Support/4G-not-working/m-p/1486997#M10898 <P>My 4G has been down the last couple of days. I have switched the phone on and off numerous times and still not working. There’s apparently no issues with o2 in the area. Please help.&nbsp;</P> Sat, 11 Sep 2021 16:58:00 GMT https://community.o2.co.uk/t5/Tech-Support/4G-not-working/m-p/1486997#M10898 Sidsid1983 2021-09-11T16:58:00Z https://community.o2.co.uk/t5/Tech-Support/4G-not-working/m-p/1487001#M10900 <P>Hi, <a href="https://community.o2.co.uk/t5/user/viewprofilepage/user-id/4603561">@Sidsid1983</a>&nbsp;- which aspect is not working: voice, data, SMS?</P><P>If SMS - You could clean your SIM card (gently!), as explained in this&nbsp;<LI-PRODUCT title="Guide: Text Message Tips (not sent or received)" id="Guide028"></LI-PRODUCT>.</P><P>All the tips for signal troubleshooting are here: <LI-PRODUCT title="Guide: How can I sort out my network issues?" id="Guide018"></LI-PRODUCT>&nbsp;</P><P>Do use the O2 network checking tool in MyO2 and log your test by registering for updates (in the Guide too).</P><P>Finally, if it is just data that is not working, switching your phone settings to use 3G instead of 4G can sometimes help overcome this issue with an oversubscribed signal.</P><P>Good luck!</P> Sat, 11 Sep 2021 17:35:01 GMT https://community.o2.co.uk/t5/Tech-Support/4G-not-working/m-p/1487001#M10900 pgn 2021-09-11T17:35:01Z