uimi is a brand-name machine. My friend bought it, but it didn't have the permission to access the network. It didn't take long to use it, and there were problems everywhere, and he wouldn't let it be returned. Later, I called the official customer service of yomi Mobile. If the machines were purchased officially, they were

returned in 7 days, exchanged in 15 days and guaranteed for 1 year according to national regulations. At first, I thought he bought a mobile phone from yomi, but when I look closely at the icon, there is an I, a cheating trademark, which is not obvious to plant a mobile phone from yomi.

in the future, you must read the trademark clearly, and don't be cheated again. The following is the correct yomi UMI