Does the message "can't establish a reliable connection to the server" pops up when you try to sign in. Here are few fix for the problem.
Unlock bootloader for Sony Xperia Tipo and Tipo dual. Trick to get unlock code. Simple, easy and updated method to Unlock boot loader.
Root any Android device of Sony like Xperia Z, Xperia L, Xperia Tipo, Xperia E, Xperia Miro, C, SP, U, Go, Arc, T, U, V, Sola, S, Sl, p etc
Learn to root your Android device without using computer. Just download a simple app. This is small tutorial to root Android device easily.
Recovery mode in Android smartphone allows to install the any other version of OS without rooting or flashing mobile phone.