You cannot use a SIM card from the United States on such devices “title =” American operators ban smartphones ordered from China on their networks “alt =” American operators ban smartphones ordered from China on their networks “American carriers ban smartphones ordered from China on their networks />
Since the Chinese manufacturers Xiaomi and OPPO/Realme cannot officially sell their smartphones in the United States, the sellers are inflating the prices for the devices. A smartphone may cost, due to import costs, not $ 200, but all $ 300 or $ 400. There is also always a risk, notes XDA, that the buyer will face fraud: a high seller rating on AliExpress is not at all a guarantee that the phone will come without defects …
Another problem is cellular communications. There are several mobile operators in America, and they all use different cellular LTE bands. For example, AT & amp; T – LTE 2, 4, 5, 12/17, 29, 30, 66; T-Mobile – LTE 2, 4, 5, 12, 66, 71, as well as 25, 26, 41; Verizon – LTE 2, 4, 5, 13, 46, 48, 66. Only one of these groups is suitable for Chinese devices.
Moreover, on the territory of the country in a certain area (for example, somewhere in the wilderness), a Chinese smartphone may simply not “ catch '' network signal.
But even if the signal “passes”, there can still be problems using foreign devices in the US. The fact is that mobile operators Verizon, AT & amp; T and Sprint (before the merger with T-Mobile) have white lists of devices on which SIM cards are officially activated. And if the smartphone has not been approved by the operator, then the SIM card may not work correctly or not work at all. Even if you activate your SIM card on an approved device and transfer it to another, it may stop working at any time.
In addition, if the smartphone does not support VoLTE, then US operators will not activate it either … Also, with full US band support, the imported device may not support Carrier Aggregation, which may slow down its performance. And the last thing is a guarantee: American companies do not provide a guarantee for devices purchased overseas. This means that if a malfunction is found, it will not be possible to make repairs for free.