https://community.o2.co.uk/t5/My-O2/Can-t-make-calls/m-p/1804174#M31399 <P>I upgraded to a new data package and downloaded an e sim yesterday. I now cannot make calls on my iPhone 16 but can receive them. What do I need to do please?</P> Mon, 28 Jul 2025 07:56:21 GMT Gordon18 2025-07-28T07:56:21Z https://community.o2.co.uk/t5/My-O2/Can-t-make-calls/m-p/1804174#M31399 <P>I upgraded to a new data package and downloaded an e sim yesterday. I now cannot make calls on my iPhone 16 but can receive them. What do I need to do please?</P> Mon, 28 Jul 2025 07:56:21 GMT https://community.o2.co.uk/t5/My-O2/Can-t-make-calls/m-p/1804174#M31399 Gordon18 2025-07-28T07:56:21Z https://community.o2.co.uk/t5/My-O2/Can-t-make-calls/m-p/1804177#M31401 <P>You say you upgraded to a new data package.</P><P>It wasn't a Data SIM by any chance?</P> Mon, 28 Jul 2025 08:47:04 GMT https://community.o2.co.uk/t5/My-O2/Can-t-make-calls/m-p/1804177#M31401 Enlli 2025-07-28T08:47:04Z https://community.o2.co.uk/t5/My-O2/Can-t-make-calls/m-p/1804180#M31403 <P><a href="https://community.o2.co.uk/t5/user/viewprofilepage/user-id/5834169">@Gordon18</a>&nbsp;</P><P>Sometimes, simply rebooting your phone can fix issues.</P><P>Also, if you have a plastic sim in your phone too, remove it to allow the esim to fully activate.</P><P>Otherwise, contact O2 <LI-PRODUCT title="Guide: How to find help &amp;amp; contact O2" id="Guide058"></LI-PRODUCT>&nbsp;</P> Mon, 28 Jul 2025 09:02:19 GMT https://community.o2.co.uk/t5/My-O2/Can-t-make-calls/m-p/1804180#M31403 MI5 2025-07-28T09:02:19Z