Pretty sure I had the same problem until discovering in my ze551kl that there was an upper and lower slot (for lack of a better word) where the microSD is shown in that photo. In the photo, it's in the upper one. Shove it in below and I bet it works. the upper slot is an SD card slot, the lower is a sim card slot.
At that time, my phone did NOT have any SIM card or External SD Card. Phone was also NOT rooted. 4.) Enabled USB Debugging on my Zenfone 2 (in MTP mode). 5.) Downloaded latest updated Firmware from Asus Support Centre: dated 03-07-2015 The firmware is in ZIP format and is stored on my PC's harddrive. 6.)

But sometimes ASUS ZenFone 5Z SIM card not detected for some reason: Incorrectly inserted SIM card. Malfunctions and defects of the SIM card or slot. Problems with drivers. Software issues. The SIM card is not activated in the settings. Let's take a closer look at each of them. The reasons for the problem with the SIM card on ASUS ZenFone 5Z.

Not showing network ( No service) in ROG Phone 5 14 hours ago; Just bought Asus ROG 6 phone in ROG Phone 6 Thursday; Can't use sim card fromcambodia in ROG Phone 6 Wednesday "no sim card detected, airtriggers not working, vibration is not functioning anymore" in ROG Phone 5 Monday; ROG3 Phone Updated Now Have NO Data Connection in ROG Phone 3 a

2. Restart your device. 3. Remove the SIM card, then use the eraser to clean the metal contact part on SIM card and re-install it. 4. If you keep another SIM card , install it to your device and check whether the device can detect and read SIM card ; or try to install your SIM card to other deivces (phone or card reader) to check whether SIM
Reinstall SIM card. 2. Restart your device. 3. Remove the SIM card, then use the eraser to clean the metal contact part on SIM card and re-install it. 4. If you keep another SIM card , install it to your device and check whether the device can detect and read SIM card ; or try to install your SIM card to other deivces (phone or card reader) to
Alternate Method #1. This method has to to with the sim tray of the phone. When there's "No service" for the networks, remove the sim tray while the phone is ON and on the homescreen or lockscreen. After removing it would show the show of 'no sim' on the status bar and if it still shows 'no service' then some fault is there with Reboot or Soft Reset your Device. Here is the guide to soft reset Asus ZenFone Max M2. There are some times when the device simply failed to detect the SIM card due to software glitches and minor errors. This kind of occurrence can be easily fixed with a simple soft reset or reboot to your device. JQms8.
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