Well I experience problem with internal storage as well. I tried to root using TWRP and towelroot. Both methods were succesful but I lost access to internal storage. Using command prompt I can browse content of internal storage, but android apps can't access it. If I remove SD card I cannot take a photo because camera software can't store data, browser can't download file, etc. Factory reset doesn't help. To repair this I needed to reflash rom. But then I lost root. Is there any way to get root and preserve access to internal storage? I have stock B127 rom. Thanks for help.
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