VIVO Y81 UNLOCK SIM LOCK SOLUTION With UMT or NCK Tool
Vivo Y81 mobile was launched in June 2018. The phone comes with a 6.22-inch touchscreen display offering a resolution of 720×1520 pixels at a pixel density of 270 pixels per inch (PPI) and an aspect ratio of 19:9. Vivo Y81 is powered by a 2GHz octa-core MediaTek Helio P22 (MT6762) processor. It comes with 3GB of RAM. The Vivo Y81 runs Android 8.1 and is powered by a 3260mAh battery.
As far as the cameras are concerned, the Vivo Y81 on the rear packs a 13-megapixel camera with an f/2.2 aperture. The rear camera setup has phase detection autofocus. It sports a 5-megapixel camera on the front for selfies with an f/2.2 aperture.
The Vivo Y81 runs FunTouch OS 4.0 is based on Android 8.1 and packs 32GB of inbuilt storage that can be expanded via microSD card (up to 256GB). The Vivo Y81 is a dual-SIM (GSM and GSM) mobile that accepts Nano-SIM and Nano-SIM cards. The Vivo Y81 measures 155.06 x 75.00 x 7.77mm (height x width x thickness) and weighs 146.50 grams. It was launched in Black and Gold colors. It bears a plastic body.
Connectivity options on the Vivo Y81 include Wi-Fi 802.11 b/g/n, GPS, Bluetooth v5.00, Micro-USB, Wi-Fi Direct, 3G, and 4G (with support for Band 40 used by some LTE networks in India). Sensors on the phone include an accelerometer, proximity sensor, and compass/ magnetometer.
As of 29th August 2022, the Vivo Y81 price in India starts at Rs. 9,999.

Exe version: NCKDongle AndroidMTK 2.7.5
Selected model: 0-By CPU ELBRUS
Phone must be off with battery inside.
Battery must be charged
Please insert USB cable now…
For some phones need to keep “VOL-” button untill inserting USB cable.
For some phones need to keep “VOL+ and VOL-” button untill inserting USB cable.
For some phones need to keep “VOL+” button untill inserting USB cable.
Detected(371) : MediaTek USB Port (COM371)
Starting META mode, wait…
Restarting to meta,wait….
If drivers missing, please install CDC drivers.
This can take up to 5 min on slow phones.
If take too long, check device manager for drivers.
[124]META Port Detected: MediaTek USB VCOM (Android) (COM124)
USB\VID_0E8D&PID_200E&MI_01\6&540F806&0&0001
Start sync target, waiting responce…..
ChipID: MT6761
[MT6761]Using Algo 5
Start sync target, waiting responce…..
[META]BaseBand CPU : MT6761
[META]SW_VER : MOLY.LR12A.R3.MP.V107.4.P4
[META]HW_VER : TK_MD_L4_HW
Meta mode conected ok, start reading phone….
[helio]Read simlock info.
IMEI Location: NVRAM
Phone imei[1] : 353261424455971
Phone imei[2] : 351772060070272
Getting simlock handle, please wait…
[104]Simlock Info : Sim [1]Block1[N] :UnLocked [remain: 5] Block2[NS] :Unlocked
Block3[SP] :Unlocked
Block4[C] :Unlocked
Block5[SIM]:Unlocked
**************
[104]Simlock Info : Sim [2]Block1[N] :UnLocked [remain: 5] Block2[NS] :Unlocked
Block3[SP] :Unlocked
Block4[C] :Unlocked
Block5[SIM]:Unlocked
**************
[0]All done.
Done.