2. Unlocked work with all sim cards accept 4G networks bands 

3. tested , very good .,with some marks of using , but not affect using 

5. iphone 5 5C Run ios 10, iphone 5S run iOS 12 many app no longer compatible with ios 10 ios 12

6. some sim cards no longer compatible with iphone 5 5c 5S even we tested it and this phone  is unlocked .

7. we clean all date of pro-owner