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Iphone sim card reader repair cost how to#
Iphone sim card reader repair cost install#

No more SIM card crash and we can set the data service freely.

Iphone sim card reader repair cost install#

Install the phone and check the network again.

Lastly, weld the backup U3016 on the phone.

Trim the welding spots on the bonding pad.

Use the same methods take down the original U3016.

Apply solder flux and heat up the U3016, then take it down.

First, fix the motherboard on the PCB holder.

We are going to take down its SIM power supply IC U3016 and install it on the phone. Pick up a Samsung A50 backup motherboard. Problem found, the SIM power supply IC U3016 has been faulty, we need to replace it. The value should be 1.8V or 3V, while both ends have no value at all. Connect the phone to DC power to boot up and measure C3034 voltage. If the other five circuits are normal, then the power supply circuit must have been faulty. There are six circuits altogether, and one SIM card connector circuit is grounding contact. Set multimeter to diode reading position, and use the black pen to measure while the red pen to ground. We can see that NFC chip U3016 supply power for SIM 2, and the measuring part is grounded capacitor C3034. SIM card power supply is 1.8V and 3V, and the voltage switches according to different networks. We can measure the clock, data, reset circuits on SIM card reader, but for power supply circuits, we need further searching. Circuit Diagram AnalysisĪll the SIM card, cameras, and screen need clock circuits, data circuits, power supply circuits as well as reset circuits to function and fail to work if any of the circuits have been faulty, so measure the four circuits first.Ĭheck the motherboard circuit diagram and search the SIM 2 circuits. We guess that the SIM circuits must have been damaged. Take down the phone and check the SIM card slot also has been water-damaged. However, when we connect Wi-Fi with SIM 2, the phone shows SIM card crash. As a result, the phone boots up normally and enters into the system. Then take down the battery and install a new battery.Īfter battery replacement, we install the phone and test again.

This is because the battery adhesive of the Samsung battery is hard to remove, and heat up the screen to soften the adhesive so that the battery can be removed easily.

Iphone sim card reader repair cost how to#

How to replace a swollen battery? First of all, heat up the screen at 90℃ for 60 seconds. As expected, the battery has been swollen, it sure cannot function well. If a new SIM card does not fix the problem, the your SIM card reader may be damaged. You should not need to change phone numbers to get a new SIM card. Take down the phone and check the battery. Contact your service provider, and get a new SIM Card to see if this will fix the problem. We hereby conclude that the battery has been faulty. We charge it, and the lightning icon shows up, but no battery charging percentage as it should be. The Samsung A50 has been water-damaged, and it cannot boot up and charge. Hence we fix a water-damage Samsung A50 and share the battery replacement method and SIM card cannot read the faulty fix idea. Many users complain that the phone cannot work because of water damage. However, its waterproof performance is not so well. It does not store any personal data.Samsung A50 is very popular around the world. The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. The cookie is used to store the user consent for the cookies in the category "Performance". This cookie is set by GDPR Cookie Consent plugin.

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