Imported phones: check your carrier's bands first

Xiaomi's Mix Fold, Honor's Magic series and OPPO's Find X all offer designs and features you generally won't see in a US store. Engadget reports that importing them is possible, and that it has gotten easier: most smartphones now work on most cellular bands worldwide. Easier is not the same as safe, though, and the list of things that can go wrong starts with the network.

Check the bands first

Start with your carrier's frequency bands, Engadget says. Buy the wrong version of a phone and you can end up stuck on LTE with no 5G at all. That is the one mistake a setting can't fix.

The features that quietly go missing

Wi-Fi calling, VoLTE and visual voicemail each need certification per device, Engadget reports, so a phone can sail through a 5G test and still refuse those three. Carrier requirements also change over time, which means a model that works today can break later. Engadget's advice: read what owners of that exact model say in forums such as Reddit before you pay.

Updates and Google

Android updates can arrive on a carrier's or a region's schedule, so your phone may sit on an older build than the same model sold here. Some phones built for the Chinese market don't work with Google Play Services, which Engadget calls a core part of the Android experience that most people expect. Plan on manual updates, and on preinstalled Chinese apps and services that may be neither relevant nor readable to you.

Warranty is where it hurts

Some of these brands have no official presence in the US. That means no customer support line to call. A dead battery or a smashed screen sends you to a third-party repair shop with no manufacturer authorization behind the work.

What you get for the hassle

Earlier access to new releases, for one. Many international models still take two physical SIM cards, a feature most US phones have dropped in favor of eSIM. The hardware is the real draw: three-screen foldables, flagships with cameras Engadget compares to DSLRs, and batteries far bigger than what US buyers get. Engadget points to the Xiaomi 18 Fold, which it describes as looking like the iPhone Duo but with a bigger battery and better cameras, at the equivalent of about $1,640. You have to buy it abroad.

The verdict

For most people the call is easy. If you need official support nearby and every feature working properly on your network, buy a phone that's officially supported here. Engadget says the same. That isn't a knock on the hardware. It's a statement about what you're buying, which is a phone plus a support system, and an import only comes with the phone. If you want the hardware badly enough to carry that risk, Engadget reckons importing can be a rewarding experience. One more check that isn't on Engadget's list: what the phone will be worth to a US buyer when you're ready to sell it.

• Honor
• OPPO
• phone imports
• Xiaomi
• Xiaomi 18 Fold