Your refurbished phone can work abroad, but there are a few things to keep in mind when using any mobile phone overseas.
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Why does my network matter?
When will I incur international roaming charges?
Should I just buy a local SIM card?
More tips
Why does my network matter?
Networks use different radio bands and technologies. In the UK and most countries, mobile service is provided over 4G/LTE and 5G (with 2G/3G being phased out). If your phone supports the bands used in the country you’re visiting, it will usually work once roaming is enabled or with a local SIM.
CDMA is not used in the UK. For most modern smartphones that support 4G/5G, compatibility abroad is common, but exact performance depends on the specific model’s supported bands and local coverage. You can find network technologies and bands in the device specifications on Back Market.
To be sure, check with your UK network (EE, O2, Vodafone UK, Three). Most provide international travel tools that indicate how your phone and plan will work abroad.
When will I incur international roaming charges?
You’ll incur roaming charges when your phone connects to a foreign network while your UK SIM is active. Charges can apply to data, calls, and texts.
Before you travel, contact your UK network to confirm roaming rates and available travel passes or add‑ons for your destination. Some plans include EU/EEA roaming allowances; outside those areas, charges can be higher.
Should I just buy a local SIM card?
It depends. If your phone is unlocked, a local prepaid SIM (or eSIM, if supported) can be cost‑effective, especially for longer trips or heavy data use. Before purchasing, confirm the SIM/eSIM is compatible with your phone model and that your device is unlocked.
If you buy from an official store for a local network, they can often test or provision a SIM/eSIM on your phone before you leave the shop.
Got any more tips?
• Consider turning mobile data off on arrival and using Wi‑Fi until you’ve confirmed your roaming plan or installed a local SIM/eSIM.
• Data speeds and coverage vary by country and network; 5G may not be available everywhere.
• Check your voicemail and call settings; using Wi‑Fi Calling can reduce roaming costs where supported.
• Always dial with the correct international code. For the UK use +44 (dropping the leading 0). For example: +44 20 XXXX XXXX.
If your phone doesn’t connect abroad, verify roaming is enabled in Settings, check APN settings if a local SIM doesn’t get data, and contact your UK network for support.