70mai Dash Cam A800S: Frequently Asked Questions

70mai 3 Months+ 2320

To all customers,

Thank you for your support.

As we received plenty of repeated questions from you, we decided to create this thread to post answers here. This thread will keep updating to help you solve your problems.

Here are the questions and answers:

Common Questions:

Q1: 70mai Hardware Kit: Where can I find English User manual and how to install the hardware kit?

We have a 70mai hardware kit installation video to help all 70mai users to install the 70mai hardware kit, here is the link: https://youtu.be/bj1pymYvLuw

You can check the English Hardware Kit User Manual with this link: https://drive.google.com/file/d/1OUhTNvdcAGvTInwL6d6hU3SkjVyZjhs5/view?usp=sharing

Q2: How to purchase the 70mai Dash Cam A800S set and other kits?

The 70mai Dash Cam A800S set and other kits are on sale. You can search 70mai Dash Cam A800S or 70mai Hardware Kit in Aliexpress.

Q3: What is the parking surveillance mode?

After the parking monitoring function is enabled, when the device is powered off, it will enter the parking monitoring mode. When the car encounters a collision while parking, the device will automatically record a parking monitoring video.

Tapping the windshield or slamming the door will not activate the parking surveillance recording.

Q4: How does the hardware kit work?

The hardware kit draws power from the car battery. But not all the time, the dash cam will consume power only when it is recording a parking surveillance video. 

Q5: Why does Dash Cam A800S not support Parking surveillance mode without 70mai hardware kit?

The 70mai Dash Cam A800S and 70mai rear camera consume a lot of power while being activated,using the battery to supply parking surveillance power might lead to a low battery or other special problems.

Q6: What are the differences between A800 and A800S?

A800S is the update version for A800.

The A800S maintains all features including 4K UHD resolution, dual-channel recording, 24h parking surveillance, built-in GPS, etc. There’s also a software upgrade that enables the A800S to support anti-flickering video playback.

In addition, to accommodate the needs of our global market better, the A800S expanded basic settings such as adding the “mph” speed unit, multiple date formats, and a wider language selection.

Q7: Where can I find the online manual of the A800S series?

Here is the instruction of your 70mai Dash Cam A800S series: https://help.70mai.asia/1471.html. You can read this first, please contact us if you have any problem.

Q8: How to delete your personal data?

You can delete your data in our 70mai APP by yourself. First you can find settings in 70mai APP, then enter user rights center and choose the delete data button. Please contact us if the problem is not resolved yet.

Q9: Where can I purchase extra electrostatic sticker?
If you want to purchase a new sticker. Here is the link to our official store: https://www.aliexpress.com/item/1005001412632598.html?spm=2114.12010612.8148356.9.994e1361SyUm9N
Q10: What should I do if my video cannot be played normally or I want better video qulity?
You can use pot player, VLC or MPC to play the videos if there is some problems when you play the video or the video quality isn't very good.

APP Questions:

Q1: How to receive the verification code?

1. Some emails can not receive the verification code immediately because of the server delay. The verification code should be received in 30 minutes.

2. You can use another email or use Facebook to log in directly if the sign-up verification code takes too long to receive.

Q2: How can I see the live rear image in the 70mai app?

The 70mai APP doesn't support the live image switch function yet. You can press the first button on the left side to switch the live image in your Dash Cam A800S.

Q3: How to connect the device while the phone has already connected the device's WiFi?

1. Please open the location authorize of the 70mai APP in the system setting list for solving this problem.

2. Please check whether your device is correct or not. Smart Dash cam and Dash cam 1S are totally different.

3. Please make sure that your wifi password filled in is correct.

Q4: How to download 70mai APP


Please search 70mai on Google Play to download the 70mai APP in your area.


Please make sure that after you log in to your account outside of mainland China, search for 70mai in the APP Store to download the 70mai APP in your area.

Overseas users can also choose to download 70mai app via the download page official website: https://www.70mai.com/en/download/#download

Q5: How can I turn off my dash cam automatically if my car supplies power all the time?

Please follow the path below to turn off the dash cam automatically after parking the car: System setting——Turned off automatically in parking——Choose the opinion you prefer.

Q6: How to download video from your 70mai dash cam?

You can follow the instruction below to download your video to local album. 

Download the video from your device---------Find this in your 70mai APP's album----------Transfer your video from 70mai album to your local album. If you have any issues contacting us or any more questions, please let us know. :)

Hardware Questions:

Q1: How to solve the automatically restart problem

The majority of the automatically restart problem is caused by the power supply or Micro SD card, please try the solution step by step:

1. Move your A800S to your house and use another charging cable to connect the power resource.

2. Please use another Micro SD card if step 1 doesn't work.

3. Please take a short video and share the link to us via help@70mai.com if the step1&2 don't work. So we can help you solve this problem.

Q2: What is the largest memory card size that is supported?

You can use a 256GB  Micro SD card in your 70mai Dash Cam A800S.

Q3: How to choose a good Micro SD card for the 70mai Dash Cam A800S?

A800S needs a high standard Micro SD card, which needs a U3&Class 10 standard memory card. Please make sure that your Micro SD card has a U3 and Class 10 logo.

Q4: Can I activate parking surveillance mode without a 70mai Hardware Kit?

No, the Parking Surveillance Mode can only be activated by installing the 70mai Hardware Kit.

Q5: What is the "recording enable / disable" function in the "System Setting" menu?

The sound recording will be turned off after you select "disable" .

Firmware Questions:

Q1:How to upgrade the firmware?

Here is the upgrading path in 70mai APP:  Download 70mai APP---Enable A800S hotspot and connect your cell phone the device------ Tap the app top-left icon---- Choose My device------Download the latest firmware----Reconnect your cell phone and push the firmware to the A800S----Connect the power resource and wait until the update succeeded

Q2: Does the A800S support voice control?

No, the Dash Cam A800S doesn't support voice control.

Q3: How do I switch it from km/h to MPH?

You can enter video settings---speed/latitude---speed unit to change.

Q4: How to activate parking surveillance mode?

The parking surveillance mode can only be activated by installing the 70mai hardware kit. You will be able to enable the parking surveillance mode in the video settings list after installing the hardware kit.

Q5: Is the 3840*2160+1080P the max resolution for the A800S?


Q6: What can I do if I can not connect the wifi of the device?

1. Please open the location authorize of the 70mai APP in the system setting list for solving this problem.

2. Please check whether your device is correct or not. Smart Dash cam and Dash cam 1S are totally different.

3. Please make sure that your wifi password filled in is correct.

Q7: How to solve the "calibration failed" problem?

The majority of the "calibration failed" is caused by the inaccurate installation, please check the guide below to solve this problem:


Q8: How to turn on/turn off the voice recording?

1. You can click the first button on the left side while disconnecting the rear camera to turn on/off voice recording.

2. Please use MPC. VLC or Pot player to play the video if use PC to play the videos.

Q9: Why does the time in dash cam A800S reset?

This problem is caused by the wrong time zone setting and turning on the GPS time service. You can solve it in the following ways:

1. Turn off the GPS time service, your dash cam will not grant the time in Greenwich + time zone every time you turn it on. Your automatic time change no longer exists.

2. You can adjust the current time zone to the time zone corresponding to your current location, so that the automatically granted time will be the correct time. 

Q10: Why parking surveillance function doesn’t work?

The working principle of parking surveillance: it is the same as recording video in emergency situations. It uses a gravity sensor (G-sensor) to sense, wake up the driving recorder and record video.

Under normal circumstances, it is difficult for a person to push the door forcibly to simulate a large impact or acceleration similar to an accident. Therefore, it is normal that it doesn’t record an emergency video when shaking the door forcibly.

We will keep updating this thread, please contact us via help@70mai.com if you can not find your question on the list.


70mai Team

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    У меня видеорегистратор A800S. Где в настройках найти функцию HDR ? В моём аппарате я не вижу кнопки включения HDR/ Спасибо.
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