2) Test: about phone function, we do not accept any dispute for test result from third partly APPlication, for example: phone info, IMEI info, Hardware test, and so on. these applications are not Samsung official app, so some results like "battery charged cycles", "Color" etc,. are not correct; 3) Waterproof: the phone supports IP68, but sorry,samsung official said the waterproof is very limited, there have many strict conditions when you using, and i suggest you not put the phone in water, because if the phone get water inside, there is no warranty anymore, and we don't accept dispute because of IP68 or waterproof; 4) Internal Storage: the internal storage maybe less than specification, for example, if your phone support 64GB ROM, but only 56GB-58GB can be used, it is normal because this phone installed many APPs and built-in systems; 5) Battery: Battery capacity of the phone maybe less than standard, normally it would be around 95% more or less. we DO NOT accept any test result from third party application; 6) Repairment: During you use this phone, pls contact us in time if you met any problem, show us phone problem via vedio and photo, we promise that we will try our best to help you. pls DO NOT open this phone by yourself or any repair store. any unauthorized disassembly or reparir without our permission will be considered as man-made problem. we will not afford any cost; 7) Logistics: if you choose Aliexpress standard shipping , the tracking number will be assigned by CaiNiao logistics system automatically. if you met any problem about tracking or delay, pls contact us before open dispute, we promise will try our best to help you;