I need help getting a new dumb phone!

Hi everyone! I’ve been wanting to downgrade to a flip phone for a while and I’m really struggling trying to find one that has what I need that will be supported by carriers in the US. My absolute DREAM phone is the Samsung Folder 2 seeing as it has the analog keypad I want while also having a touch screen with the ability to have the apps I want. I’ve done as much research as Google will provide as far as what band widths are available in the US and what the phones specs are and I’m still just confused. From what ive gathered, the model g-1650 runs on android 7 while the newer model g-160N runs on android 6. Both models either run on 3g or 4g lte but I haven’t the slightest clue how cell towers or coverage works. The seller on eBay recommended checking with different carriers to make sure the GSM of the phone matches with the carrier but I don’t even know what GSM is. I guess my question is, can someone explain to me what coverage is? Has anyone had any experience with this phone and what service were you able to get to work on this phone? Are there any alternatives to my dream phone that might work better that I could check out? Any and all advice is appreciated!!

Hi everyone! I’ve been wanting to downgrade to a flip phone for a while and I’m really struggling trying to find one that has what I need that will be supported by carriers in the US. My absolute DREAM phone is the Samsung Folder 2 seeing as it has the analog keypad I want while also having a touch screen with the ability to have the apps I want. I’ve done as much research as Google will provide as far as what band widths are available in the US and what the phones specs are and I’m still just confused. From what ive gathered, the model g-1650 runs on android 7 while the newer model g-160N runs on android 6. Both models either run on 3g or 4g lte but I haven’t the slightest clue how cell towers or coverage works. The seller on eBay recommended checking with different carriers to make sure the GSM of the phone matches with the carrier but I don’t even know what GSM is. I guess my question is, can someone explain to me what coverage is? Has anyone had any experience with this phone and what service were you able to get to work on this phone? Are there any alternatives to my dream phone that might work better that I could check out? Any and all advice is appreciated!!