I'm considering buying the Oppo F9 Pro, which has a dual sim GSM slot. I currently have consumer cellular service with a nano GSM sim card. would I be able to import the Indian phone and use it here without any problems?
A quick search brings up this site:
Which indicates that the Oppo F9 Pro would only have 2/2.5G speeds on some US carriers with GSM and NO support on the rest of the carriers for signal or speed. It would appear to be limited pre-2008 data speeds in the United States and presumably still usable as a phone/SMS on supported carriers.
As a more general answer:
- Look up what frequency bands are used by your carrier.
- Do the same for your specific phone model.
There are websites dedicated to answering this exact question, for example frequencycheck.com.
From this site (or a Google search), we can figure out that Oppo F9 Pro supports:
- 900 (E-GSM) GSM
- 1800 (DCS) GSM
- 1900 (PCS) GSM
Now you'll have to compare this with whatever info your find for the carrier you wish to use, the website mentioned above makes the comparison a lot easier. Here's a hardcoded link for your device with "country" set to the US:
In short, you'll only get support for 1900 (PCS) on some carriers (GRPS/EDGE). No speeds to write home about.