Aliexpress
Here are coupons that you can use.
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Hong Kong – UMIDIGI One Max 4/128GB Black (-3 USD)
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China. As you can see I didn’t find any active coupon for this product right now…
Link: Banggood product page
Price: -3 USD
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): 12bgOM4, affiliate6, aff7off, od7off, BGBFAFF2019, BGCITYADS2019, Email5
(I don’t think these’re gonna work, but you can try ’em out anyway)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Hong Kong – UMIDIGI One Max 4/128GB Black (-3 USD)
Price history and price alert
Do you need price history chart (for all/most countries) for UMIDIGI One Max 4/128GB Twilight? There we go.
Price records source(s): Gearbest, Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).