While we sell only factory-network unlocked devices, they might support different 4G/5G frequencies. We usually list these frequencies in product questions. If not - you may ask us about them. It's wise to compare these frequencies with yours's carrier frequencies to check compatibility of your phone with your carrier. There are also some pages that do this automatically, but please be sure that you choose proper variant of the device to compare. Some devices comes even in 4 or more 4G/5G frequencies variants. Choosing un proper variant for your country sometimes don't have negative effect at all, some devices can be unlocked for more 4G/5G frequencies at your local 3rd party GSM service, and some will just have more poor coverage comparing to proper-variant ones.