What methods can improve the memory without changing the phone and inserting an expansion card?

If you don't insert expansion cards or other hardware facilities, you can only compress the memory. You can download a cleaning software, but the cleaning software will only move your cache most of the time. After all, he is afraid to move most things. After all, he doesn't know if you can use some things, so the company that develops the software doesn't dare to give him too much authority, so it's safe to clean up the software. If you just clean up part of the cache, then the following steps are actually needed.

If you clear the cache, it will still get stuck. In fact, what he mainly knows is caching. If you get stuck because of lack of memory, you can almost get it done. If you still can't solve it, you can manually clean it up, such as music pictures and downloaded movies. You can also use the internet to surf the internet. Some documents and files can be compressed and stored in one document, which is also very convenient.

Otherwise, you can only format it, but formatting is risky, so you must be careful, because unreasonable formatting of memory will also make you know the phone book information and your favorite operating mode clearly, so if you really want to format it, you must remember to make a backup.

In addition to working on your mobile phone, you can also try using the online cloud. In this era of big data, the online cloud is actually very developed. Only where there is a network, it is not only convenient to extract, but also completely in the cloud. You can operate in the cloud unless you have to download it.

And the security is getting higher and higher. I hardly download music and movies now. Basically, I have wifi and Internet access in Baidu's network disk or qq music, and the memory of the network disk is also large enough. Take Baidu's network disk as an example. Ordinary users have more than 2,000 G of memory, and members are even more scary.