How to test and fix Android smartphone charging system using Multimeter and current meter 

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Thank you, I will put it in the description soon

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All electronics come with datasheet for development use

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Thank you, its a Gordak 868A SMD rework soldering station

hello, thanks for writing me. If device displays images well but unresponsive to touch its most probably a fault sensor, replace it.

Its a USB Current Meter

Yaa the small meter is called USB current meter, you can also download some app they somehow work the same

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He charged the battery using one of his tools

I boosted the battery using a power supply

From East Africa, Uganda specifically

Usually when phone batteries are full they read up to 4.4V, so 4.18V should be around 80%

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Thank you, check the description

Thanks, Gram for this question, Fast charging in phones is actually 2 way, the phone should support fast charging well as the charger and USB cable, The phone should have a switching charging system Ic which uses PWM with an external inductor so as to create different current by adjusting switching frequency. Then most phone fast chargers a rated up to 9V, 2A equivalent to 18watt, well as a normal charger a 5V 1A, a 65W chargers a usually for laptops. You should check if your phone supports fast charging and it's mostly in Type C phones only. Linear chargers use voltage and current drop methods, they do charge faster but produce a lot of heat, are not safe and efficient, they are mostly built-in cheap phones and Tablets.

@@platinumphonesandcomputers If your cell phone doesn't support fast charging that means the cell phone internal charging system IC is a LINEAR charging IC? I'm not sure what the part numbers are for the charging system IC chips or what circuits is inside the charging system IC chips. The theory of operation is the cell phone takes the 5vdc @1 amp and the charging system IC will convert the 5vdc@1amp to a PWM signal to "tickle charge" the battery? I don't know any other things that use those charging system IC chips other than cell phones and tablets but they have LINEAR and SWITCHING charging IC chips. The Type C cell phones is the USB-C cable type which charges the cell phone differently because the USB-C has some type of bi-directional for sensing Heat I think because the more WATTS the heat will adjust the PWM signal to tickle charge the battery. I'm not sure if you can REMOVE the linear charging system IC chip for cell phones that doesn't support fast charging and modify it by installing a Switching fast charging system IC chip? not sure if you have done this before or not these types of modifications to NON-fast charging cell phones to making them Fast charging cell phones.

Its called USB Current Meter

Its called a USB Current meter, you can get it from electronic and spare shops

Platinum phones & computers okay thanks bro I’ll search for it

@@gentlemanbarbershop233 you are welcome bro

thank you bro

The Amps a shown on the USB current meter

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hello, if the battery charges but you measure zero when connected to the motherboard, you probably have a short on the motherboard. Check out my latest video about fixing short motherboard

ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-gSfkwP4E-eE.html

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Replace the battery

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They should look alike with the old one

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Yes Mubiru, you can get my contact on my website there is a link on my channel

@@platinumphonesandcomputers thanxx

Uganda Kampala

seriously send me msg i will be happy to share experience!