can i upgrade my phone? if yes which one?

the-sentinel

Reputable
Apr 4, 2015
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4,520
hi im planning to upgrade my phone. i want an unlocked phone which i will be using abroad. im from the uk.
right now ive got a contract samsung galaxy ace 3 which is locked. i was thinking about upgrading it to something with better battery and hopefully newer as well. the question is, can i change my phone and still use my contract sim in the new one? is it not a problem to change phones while you are running on contract?
if yes which phones would you recommend? i can also buy second hand phones.
my budget is £200.