Without you saying whether you're on PAYG or pay-monthly, I would assume pay-monthly. Many questions arise as to your circumstances, firstly how far into your minimum contractual term you are,
You could reduce your monthly costs by converting to PAYG, but this can only be done in the UK and if attempted abroad, will result in your phone losing coverage until you return to the UK.
If you're outside your minimum term, you could reduce your plan to a very low allowance SIM-only. Need to know more about your circumstances here.
