I want to roam my mtn line in uk

I am already abroad and forget to activate roaming while in Zambia. Please I need help to get connected.

How can I retrieve my MTN line in UK

My MTN network recently started going off. It might go off for a week and come back on for 30 minutes and go again. It's been like that for a month now. I recharge the SIM often...

I hope my is roamed...