Why is it so slow to delete messages on my Motorola phone XT800? How to speed up?

It's time to clean up the phone memory! If the mobile phone is used for a long time, if the junk files are not cleaned up, it will cause the junk files to occupy a lot of system memory, which will lead to the card being stuck and slow down the Internet access and startup speed of the mobile phone. Therefore, it is very important to clean up the cache files of mobile phones in time. Install an Android optimization master and download it directly online, free of charge. You can also clean up cache files such as SD card, Internet access and SMS, and directly speed up your mobile phone.