https://community.o2.co.uk/t5/Pay-As-You-Go/4g-sim/m-p/1797685#M37375 <P>I'm still on O2's cheapest tariff (2g &amp; 3g only) with a 3g only phone which is no longer supported after a date in July. My question is can I keep the same&nbsp; cheap tariff and number but upgrade to a 4g sim and new 4g phone.</P> Thu, 12 Jun 2025 14:59:37 GMT EB8 2025-06-12T14:59:37Z https://community.o2.co.uk/t5/Pay-As-You-Go/4g-sim/m-p/1797685#M37375 <P>I'm still on O2's cheapest tariff (2g &amp; 3g only) with a 3g only phone which is no longer supported after a date in July. My question is can I keep the same&nbsp; cheap tariff and number but upgrade to a 4g sim and new 4g phone.</P> Thu, 12 Jun 2025 14:59:37 GMT https://community.o2.co.uk/t5/Pay-As-You-Go/4g-sim/m-p/1797685#M37375 EB8 2025-06-12T14:59:37Z https://community.o2.co.uk/t5/Pay-As-You-Go/4g-sim/m-p/1797688#M37376 <P>Yes you can</P><P>Buy the phone anywhere but take photo ID into an o2 store</P><P>They will swap everything over to a new sim for you free of charge</P> Thu, 12 Jun 2025 15:24:28 GMT https://community.o2.co.uk/t5/Pay-As-You-Go/4g-sim/m-p/1797688#M37376 jonsie 2025-06-12T15:24:28Z