Problem is that if we use in 1st slot sim
Mobilink Jazz sim.
So we can use other network sim in slot two also. It's default by Mobilink Jazz Company.
If don't use (Mobilink Jazz) sim in slot 1st.
So we can't use any other sim even in slot two and one.
It's giving message on screen please insert valid sim of Mobilink Jazz
If see in setting sim card manager
Message like this
Sim locked phone.
****************************/view/7x0jv...064_n.jpg/file
Operation : SP Unlock [ v2.09 ]
Mode : META
1. Make sure device is powered off. Power off, if need. Wait 20 seconds after
2. Insert USB cable in phone
Waiting for device connection ...
PTFN : MediaTek PreLoader USB VCOM_V1632 (Android) (COM21)
MODE : PRELOADER PORT
PORT : 21
Waiting BOOT ack ...
PRELOADER : ACK confirmed!
INIT : META confirmed!
Boot done!
AP_CHIP : MT6739,S01
AP_SWTM : 2020年 01月 08日 星期三 10:35:52 CST
AP_SWVR : alps-mp-k0.kaios.mp2-V1.6_P11
MD_CHIP : MT6739
MD_SWVR : FISE6731_KAIS_S_E_K_HW
IMEI[1] : 35475xxx
ID0 : Lock : Not Locked | MNC : 0 | CNT : 5 | CODE : 12345678
ID1 : Lock : Not Locked | MNC : 0 | CNT : 5 | CODE : 56781234
ID2 : Lock : Not Locked | MNC : 0 | CNT : 5 | CODE : 33334444
ID3 : Lock : Not Locked | MNC : 0 | CNT : 5 | CODE : 33334444
ID4 : Lock : Not Locked | MNC : 0 | CNT : 5 | CODE : 55556666
ID5 : Lock : Not Locked | MNC : 0 | CNT : 5 | CODE : 77778888
ID6 : Lock : Not Locked | MNC : 0 | CNT : 5 | CODE : 99990000
SPLock Info : Not locked!
IMEI[2] : 35475xxx
ID0 : Lock : Not Locked | MNC : 0 | CNT : 5 | CODE : 12345678
ID1 : Lock : Not Locked | MNC : 0 | CNT : 5 | CODE : 56781234
ID2 : Lock : Not Locked | MNC : 0 | CNT : 5 | CODE : 33334444
ID3 : Lock : Not Locked | MNC : 0 | CNT : 5 | CODE : 33334444
ID4 : Lock : Not Locked | MNC : 0 | CNT : 5 | CODE : 55556666
ID5 : Lock : Not Locked | MNC : 0 | CNT : 5 | CODE : 77778888
ID6 : Lock : Not Locked | MNC : 0 | CNT : 5 | CODE : 99990000
SPLock Info : Not locked!
Done!
Elapsed: 00:01:18
Unlock log and phone is still locked by other network.