I have a Xperia Z on £10.00 big bundle, just bought a Xperia Z5, put in a big bundle sim, how do I change new for old to keep my teriff and remaining top up?
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I have no affiliation whatsoever with O2 or any subsidiary companies. Comments posted are entirely of my own opinion. This is not Customer Service so we are unable to help with account specific issues. Please select the post that helped you best and mark as the solution. This helps other members in resolving their issues faster. Thank you.
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