Even though mobile technology has made incredible progress in recent years, developers seem to have forgotten about battery innovation. Thus, users still have to think about charging and, if they plan to use one smartphone for a long time, also about the good condition of the battery. HyperOS it offers an excellent tool for this.
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Viewing battery status is a hidden feature in HyperOS
There are a number of applications for monitoring battery health, but in general, the fewer applications we have on a smartphone, the better its endurance and performance. If you are a HyperOS user, there is an alternative in the form of a hidden menu that monitors the battery status and provides the user with a range of information.
The condition for calling up the menu is that your smartphone has an add-on installed HyperOS (or even older MIUI). Then you just need to know the secret code to activate the offer. You enter the code in the application Telephone - Caller on the keypad in the same way as you would enter a phone number.
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When called on the keyboard, you enter these characters * # * # * # * # 6485. After entering the last star, the battery status menu is displayed. If this does not happen, press the green handset button after the last star - Phone call.
The activated menu contains information about the battery and its status, which are listed under certain codes. To give you a better overview, we'll describe what each data means. However, we want to add that not all data must be shown to every user.
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Here are explanations of each piece of information
MB_XX codes:
MB_00 - percentage of remaining battery power
MB_01 - current battery status - Charging / Discharging
MB_02 - charging method - for example fast, common, etc.
MB_03 - current voltage state - for example 4394984, ie 4,39 volts
MB_04 - current value of the drawn voltage by phone
MB_05 - battery temperature - for example 297 the value is 29,7 ° C
MB_06 - battery status - if you see the information Good, it means that it is in good condition
MB_07 - Charger chip temperature or Charging adapter temperature respectively
MB_08 - current level of temperature control
MB_09 - maximum battery voltage when fully charged
MU_XX codes:
MU_00 - type of charger used
MU_01 - current charging mode
MU_02 - direction of output or charging input (0 - does not charge / 1 - charging / 2 - reverse charging)
MU_03 - maximum input voltage via USB
MU_04 - current input voltage via USB
Codes MF_XX:
MF_00: - internal battery resistance
MF_01: - actual charge level in percent. If this parameter is not the same as MB_00, this may indicate a problem. Sometimes it is enough to restore the factory settings.
MF_02: - battery cycle - how many battery charging cycles fully charge from 0% to 100%
MF_03: - battery contact resistance - battery resistance with motherboard contact
MF_05: - actual battery capacity
MF_06: - battery capacity specified by the manufacturer
MM_XX codes:
MM_00: - AICL result (adaptive input current limit)
MM_01: - USB input current
MM_02: - maximum charging voltage of the charger
MM_03: - maximum current full charging capacity
As mentioned, not every user may see all of the codes listed. One of the most important indicators in this case is below code MF_02. This indicates how many charge cycles the battery has come.
What it is the higher the value, the more susceptible the battery is to voltage drop and its performance. A value of 500 or more means approximately a year and a half of use and indicates a significant decrease in battery power.
Of course, this is only informational data and there is no need to panic in case of inadequate values. If your smartphone works reliably, then everything is fine. We only pointed out the possibility to check the condition of the battery without the need to install a third-party application. In the discussion you can share your findings.
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What is MU_01,
in my phone it is showing sink attached then nothing attached and this is changing every time. And my battery backup is also decreased
I have MIUI 12 and in all of them it was displayed after the parameter MF_02 or in MI 9 did they move or what are you doing?
Same here.
No solution yet.
Na Redmi The Note 13 Pro 5G didn't show me anything.
Of course, MF02 does not show me (Xiaomi 13T), what could be the reason?