Huawei mobile phone Android version 4.4, I have successfully updated WeChat 7.0.6 with App Bao. I tried several old micro signals, and I can log in normally, but I can't register new micro signals. I registered a new micro-signal with another mobile phone version of WeChat 7.0. 19, but the newly registered micro-signal could not be logged in on the old mobile phone, showing a low version of WeChat, but on the old mobile phone, WeChat was displayed as the latest version, and the download was high. Why can other old numbers log in and new numbers can't? Can the great gods solve it?