O2 disease

In addition to the errors that the factory itself has encountered such as obsolete ROM, low RAM, slow running machine . sometimes the error is caused by the user is not correct. Will "hometown" very much if you are dancing a pen to send congratulatory messages that "stubborn" machine does not obey.

If you are composing a message that the screen is suddenly blank, it is a frequent error for some O2 devices. The reason is that this model has an error or your ROM is not stable. If this error occurs because the memory capacity is too full, you should delete the message. In case of sending MMS, check if the file size is attached and save it on the card or in memory. When the above methods are disabled, use Hard Reset "therapy". The device will be back to its original age. If that is not possible, you should upgrade or return to any ROM that you find most stable. Normally, installing ROM takes about 30 minutes.

Sound loss

You are often complained by callers at times when it is not, that is the common mistake with XDA II. The reason is that the hardware is not compatible with SIM of some mobile phone service providers, typically SIM of Viettel. Sometimes, the ROMs of O2 series themselves are also small errors of the phone software.

If you have just bought O2 and haven't used it for a long time, it should be noticed if the device has Bluetooth headset mode. If the Bluetooth headset is connected to the phone, some old ROMs will not make voice calls on the phone, but must be communicated via the headset.

The screen is rough

O2 is always proud of the touch screen and the magic pen just doesn't hit it. However, nothing is more crazy than just one place but the screen shows another. When you encounter this situation, many customers immediately have new ROM or Hard Reset.

The reason is that the "cheap" patch that you use to paste the screen. Hard and slippery patches of Taiwan and China are easy to deflect the screen because the temperature of the screen causes it to stretch. When using this type of patch, the first time usually does not have any phenomenon, but the time after the sticker is often deformed.

When you encounter this situation, you should remove the old patch to replace the new one. Without experience of sticking or not skillful, it is recommended to go to specialized O2 centers thanks to the stickers. Also according to the experience of many players, lumpy stickers when applied to the screen look a bit dark but do not deform the screen. However, it is recommended to buy standard stickers at reputable shopping centers, when buying, specify the type of machine to select the appropriate item.

Before you paste, you should clean the dirt off the screen. Look at the screen at a 45-degree angle to see if the dust remains. Manipulation from top to bottom, slow tempo. Using a card (sold with a patch) pushes the air out. So until the patch fits the screen.

There are also exceptions: some touch screens are skewed after using or not using stickers. You can fix it by manually adjusting the Align screen, or Up ROM is more appropriate. Replacing the new screen also helps the screen out of alignment but the cost is very high and the safety is not confirmed by anyone.