Looking for a phone to use on Sprint.

No, Sprint phones must be cdma, not gsm. My understanding is that Honor and P30 are gsm only phones. So only tmobile or att
 
Presumably, that will change at some point in the near future when T-Mobile and Sprint finish integrating their networks.
 
Friend of mine looking for a phone. He was interested in getting the Honor 20 or the P30 (regular one.) when in the states, he's on sprint. Would either of those phones work on sprint?

Does he live in the US, or is he coming in and out for business?Just trying to clarify what his needs are. Thanks!
 
Gotcha, so he needs a Sprint phone with International GSM, or "World Phone" capability. Now we know better what his needs are, and that makes it easier to narrow the options down, thanks for the update!