2: Is it brand new?
3. Is it guaranteed all over the country? How about after sale?
. . .
Actually, that's not the point. The most important thing is to choose a good store and not be greedy for petty gain. Shops with good reputation will get good after-sales treatment even if there is a problem with their mobile phones. (For example, there is something wrong with the earphone. As long as there is evidence, the store will send another one without saying anything. I have experienced it, and the after-sales service is very good, because they don't have a bad review because of a headset. A poor store can't do it at all, and even if you want to do it, you don't have the strength.
Look at this. These companies have a high reputation.
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Three principles of online shopping:
1. Don't be greedy and cheap, let alone think about the difference.
2. Be sure to use third-party tools, so that the dispute can be solved easily.
3. Ask in detail before buying (don't be afraid that the seller will bother you, if he bothers you, it means that he is not sincere and directly changes people ~ ~). When asking, it is best to use the special chat tool on the website (there is a chat record to obtain evidence)