Constant issues

[IOnicDev]

Hi, I got my Zflip5 back from a warranty repair on the microphone even since then I've had the following issues

Calls going completely silent on both sides, calls usually last 1 - 3 minutes before this happens

Phone constantly locking up, full system freeze, have to wait ages for it to come back or force restart the phone. 

When I open any app it says there is an issue with my Internet collection, if I open 

reddit it says press to retry

My banking app I have to force and open several times

Browsing the Internet just stops working 

Smart watch disconnects and reconnects sometimes when this happens 

This is just some examples but every app is struggling, it's almost like every few minutes my connection drops, doesn't matter if it's data or WiFi 

They stated that they had changed the battery during the repair, but several apps say my battery health is 91% and estimated capacity is 3200mah

[Piper123]

Hey there and welcome to the Samsung UK and EU Community Customer to Customer Forum

As you sent your device for warranty repair, you'll need to go back to Samsung Customer Services and get it rebooked in again so they can take a further look.

I would recommend you write down what the issues are and include that in your package so the engineer sees it.

[BandOfBrothers]

Hello @IOnicDev and may I extend a Warm Welcome to the Samsung Community Forum 👋 

It does sound like your experiencing some issues with your phone which may need to be re looked at via a Samsung Service Centre. 

However before that perhaps try >

1. Settings > General Management > Reset > Reset All Settings

Settings > General Management > Reset > Reset Network Connections. 

Forced reboot by holding down the volume down key and power button simultaneously for more than 7 seconds to restart it. When your phone resets, you will feel it vibrate.

2. Clear Cache Files from the phone's System Partition Section  > https://www.samsung.com/uk/support/mobile-devices/how-do-i-clear-the-cache-on-my-device/ You may need to insert your earphones or hook upto a powered On Laptop or use a Tv's USB Port to access the Clear Partition Section. This may help with lag or stutters as this clears the phone of old/unused or broken cache files.There is also a Repair Apps option in the Menu System too { Possibly excluding the s²⁴ Series of phone's } 

3. Safe Mode  > https://www.samsung.com/uk/support/mobile-devices/how-to-start-my-galaxy-device-in-safe-mode/ turns off downloaded apps and themes etc which may highlight an app or theme that's causing conflict. Alternatively long press the power off button and then long hold on Turn Off to get to Safe Mode. 

4. Last resort is back up and factory reset but then set the phone up as new i.e don't use the back up. 

If i can be of any further help please don't hesitate to ask  😎 

[SMAYA]

I have similar issues with zflip4, when I open the phone the screen is flicking and flashing; during the call it goes completely black; at times I have to force restart. Very frustrating.