FonLab, Mobile Repairing Stories

iPhone 7 Plus Audio Problem Speaker Icon Passive (grayed-Out) on Calls Case : There is no sound on calls, Voice Recorder doesn't record anything, Speaker Icon on calls is greyed-out. Solution : This issue generally (for iPhone 7 and iPhone 7 Plus) occurs when Audio Ic damaged or has broken lines/pads under the chip. I have experienced this issue because of bad front camera flex several times also. Removing Audio IC: Remove the Audio IC, and remove soldermask on lines with a sharp and thin knife carefully like image below. and solder very thin copper cable along lines to the pads, then apply solder mask on the lines (not pads) line on image below:  keep main board under the UV light (to get to ready solder mask) for about ten mins, so you can install the same audio ic back. Result :

Apple Iphone 7 Not Charging! Case : Apple Iphone 7 not charging, nothing happens when connect the charger and just 1mA current drive on USB charging cable power line. Phone works well with a charged battery, also there is no effect when phone is powered on and charger plugged. Expected behaviour of the when the battery not connected and charger connected is valid voltage generated on VDD_MAIN line (about 4v) and boot loop on the screen about 6-7 sec. periods, and current drawing 17mA, 50mA, 110mA, 200mA and zero respectively. This issue can be caused by the charging flex, but changing charging flex resulted the same symthoms. Not charging, no current draw! Second suspecious part(s) are the parts placed arround charge flex b2b connector on board or itself of the connector, and there was no problems at all. The classical hero is that kind of problem is generally Tristar IC known as U2 : 610A3B Our hero is buttom side of the iphone 7 logic board (below NAND Memory). But there is a little ...

Redmi Note 10 Mainboard Hardware Components and Features  There is a list of components used in Xiaomi Redmi Note 10. Redmi Note 10 CPU Main Processor : Qualcomm SM6150 This IC's manufacturer is Qualcomm. Chipset is Snapdragon 675 , relased 10-23-2018. It has 8 cores with 2Ghz maximum clock speed. As a CPU; Octa-Core 2 processors 2x2Ghz Kryo 460 Gold (Dual-core) and 6x1.7 Ghz Kryo 460 Silver (Hexa-core). As a GPU (Graphical Proccessor Unit) : Qualcomm Adreno 612  (845 Mhz), 11nm transistor size and 64 Bit ARMv8-A (A32,A64) architecture, no Level 1 cache, 896Kb Level 2 Cache and 1MB Level 3 Cache. LPDDR4X ram supported(2x16 bit 1866Mhz). Redmi Note 10 Memory There can be a question on minds, Redmi Note 10 has UFS or EMMC memory?  It has UFS 2.2 Memory with different memory sizes such 64GB 4GB RAM, 128GB 4GB RAM, 128GB 6GB or RAM in BGA254 package. Power IC's  Primary PM6150 and secondary PM6150L , dual PMIC's. Redmi Note 10 Charge IC: BQ25968 Redmi Note 10 Lcd ...

 MediaTek MT6631N Wifi Bt Ic Models List There is a complette list of mobile phones which uses MT6631N Wifi IC : CONDOR ALLURE M3 (SP627)  CONDOR ALLURE M3 LITE  HUAWEI HONOR 8A  HUAWEI Y5 2019  HUAWEI Y6(2019)  HUAWEI Honor 8A  HUAWEI Y6S 2019  INFINIX HOT 10 PLAY (X688)  INFINIX HOT 7 PRO(X625)  INFINIX HOT 8(X650C)  INFINIX HOT 9 (X655C)  INFINIX NOTE 7 (X690)  INFINIX NOTE 8 (X692)  INFINIX SMART 3 PLUS(X627)  INFINIX SMART 1-4C(X653)  INFINIX SMART 5(X657)  INFINIX HOT 10S (X689)  INFINIX NOTE 10 (X693)  INFINIX ZERO 8 (X687)  INFINIX NOTE 11 PRO (X697)  INFINIX X6816  INFINIX ZERO 4 PLUS (X602)  INFINIX S5 PRO (X660)  LAVA Z93  LAVA LIX402 YUVA PRO  LAVA LAVA Z1  LAVA DO(503 BLAZE SG  LENOVO A6 NOTE  LENOVO K9 L38043  LENOVO TB-606  LENOVO K5S  LENOVO TB3616F  LENOVO TAB P11 PLUS  LG K12 Plus - LMX420BMW  ME...

MediaTek MT6357CRV Power Ic Compatible Model List There is a list of mobile phones which has MT6357CRV as a power management IC: Huawei Honor 8A Infinix Hot 10 Play Infinix Hot 7 Pro Infinix Hot 9 Infinix Note 7 Lite Infinix X650C Infinix S5 Infinix S5 Pro Lenovo A6 Note Lenovo K9 Lenovo TB-505 Lenovo TB-8705F Lenovo K5S Motorola E6 Plus Motorola XT-2229 Nokia 3.1 Plus Nokia G20 Oppo A1K Oppo A73S Oppo A15 Oppo A31 Oppo A54 Oppo A8 Oppo A15S Oppo A16 Oppo A35 Oppo A5S Oppo A57 4G 2022 Realme C2 Realme C11 (MTK) Realme C12 Realme C15 MTK Realme C20 Realme C21 Samsung SM-A107 Samsung SM-A125 Samsung SM-T225 Samsung SM-A037 Samsung SM-A107M Samsung SM-M125 Tecno KG5 Vivo Y12 Vivo Y12S Vivo Y15 Vivo Y17 Vivo Y1S Vivo Y30 Vivo Y30i Vivo Y81i Vivo Y83 Vivo Y91C Vivo Y12S Vivo Y15S Vivo Y21 Vivo Y81i Vivo Y16 Vivo Y02S Vivo Y01 Xiaomi Mi Play Xiaomi Redmi 16 Xiaomi Redmi 9C Xiaomi Redmi 6 Xiaomi Redmi 6A If you find this MT6357CRV PMIC on another phone not listed above please inform me on com...

 Sony Xperia XA1 Ultra Not Charging! Case:  Mobile phone works well, there is no problem if battery has charge on it. When I connect it to charger which shows current drawing on charge, there was no current drawing on charge. (first line and second value is zero althought it connects to mobile.) Solution: Let's Measure Some Points! First point is 5v Vbus from charger station, there was 5v. This means our connector, and flex are good. This point goes to OVP IC (Over Voltage Protection IC), there is an input capacitor, this point also has 5V. The second capacitor placed upperside of OVP is output capacitor of OVP circuit. There should be 5V if OVP is also good. But there is no voltage on this point ! This can be caused by damaged OVP or any short on output line, when I measure short circuit on this capacitor, no faulty, It means OVP is damaged. Solution is Changing OVP IC by new one! or another aspirine solution ( I never recommend this but it's a solution too ) You can short ...

Sony Xperia XA1 Ultra Bricked! Case:   XA1 Ultra is flashed with wrong firmware (another type of XA1 ultra < he said G3223 >, but not G3221) and can not be flashed by Setool anymore! Setool find the phone for the first time (over MTK Port) by pressing vol dn and connecting usb cable and result an error like below: PLEASE ATTACH TURNED OFF PHONE NOW PRESS AND HOLD "BACK" OR "VOLUME DOWN" BUTTON ... S1BOOT NOT DETECTED FAILED TO SETUP PHONE Elapsed: 5 seconds Solution: XA1 ultra has 32gb emmc ( HBG4a2, SK Hynix ) BGA 221 package, not epoxied, there is no glue under the chip, so easy to remove from board. Emmc boot config should be enabled for Boot Partition 1 .  I removed the chip, reballed and connected it to UFIBOX, there was no any abnormal situation with the chip, boot config was correct, partitions are ok. I have another alive XA1 Ultra G3221, I removed the emmc chip and read boot1, boot2 partitions and  and exdcsd.bin. Just wrote these files to bricked on...