Cancel your Cheetah Mobile / Kingsoft Duba subscription by mail
Cheetah Mobile / Kingsoft Duba accepts written cancellation requests by post, which makes certified mail the strongest proof that you asked. Letters to Cheetah Mobile / Kingsoft Duba go to Zhuhai, China.
Let Postbye cancel Cheetah Mobile / Kingsoft Duba for you
We write your letter, mail it by certified mail the next business day, and confirm when the cancellation went through. You keep the signed proof.
Money-back guarantee within 10 business days.
Postbye is not affiliated with Cheetah Mobile / Kingsoft Duba.
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- 2 Cheetah Mobile / Kingsoft Duba cancellations handled this month
- Certified mail with tracking
- Mailed every business day
- Delivery proof sent to you
- We confirm your cancellation
How to cancel Cheetah Mobile / Kingsoft Duba by mail
Start with your account details
You will need the account number, the phone number or service address being cancelled and the name on the account. Use exactly the details Cheetah Mobile / Kingsoft Duba holds, so the request can be matched to your account.
Draft the request
Cheetah Mobile / Kingsoft Duba is based in China, so the letter goes out in Chinese, built from our Chinese template. Subject line: “主题：取消请求 – [your name]”. It asks for the subscription to end, for further charges to stop and for written confirmation.
Mail the letter with a receipt
Send the letter to the Zhuhai mailing address shown below by certified mail. Keep the tracking number safe.
Save the tracking record
File the receipt with the letter. A Cheetah Mobile / Kingsoft Duba charge dated after delivery is the one to dispute, and these two documents are what you quote.
With Postbye, steps 2 to 4 take about two minutes of your time.
Where your Cheetah Mobile / Kingsoft Duba cancellation letter goes
Cheetah Mobile / Kingsoft Duba can be reached by post at 珠海市高新区唐家湾镇前岛环路321号金山软件园5号楼, 519080 Zhuhai, China.
The postcode 519080 belongs to Guangdong, China, so this is where the envelope is delivered.
Your name, address and email appear in a short block labelled 账户持有人, 存档的账单地址 and 存档的电子邮件地址, under the greeting “相关负责人：”.
Prefer to write it yourself? Use our letter template
Every address we hold for Cheetah Mobile / Kingsoft Duba, with the envelope wording
Before you cancel Cheetah Mobile / Kingsoft Duba, check these
- Name the exact line or service address. Accounts with several lines can leave one of them running.
- Ask for a final bill in writing and return any rented equipment by tracked mail.
- Check for an early-termination fee or a remaining equipment balance before the cancellation date.
Several states set rules for subscriptions that renew on their own. See what yours requires in automatic renewal laws by state.
Let Postbye cancel Cheetah Mobile / Kingsoft Duba for you
We write your letter, mail it by certified mail the next business day, and confirm when the cancellation went through. You keep the signed proof.
Cancelling a phone or internet plan
Phone and internet providers tie cancellation to contracts, equipment balances and notice periods, so the request should name the exact line or service and ask for a final bill in writing.
Putting the request in writing means there is a date on file for when you asked, which matters if a charge appears afterwards.
Cheetah Mobile / Kingsoft Duba cancellation at a glance
- How Cheetah Mobile / Kingsoft Duba accepts cancellations
- By mailed letter
- Mailing address on file
- Cheetah Mobile / Kingsoft Duba 珠海市高新区唐家湾镇前岛环路321号金山软件园5号楼 519080 Zhuhai China
- Country
- China
- Letter language
- Chinese (template zh)
- Category (from the company name)
- Phone & internet
- Added to the database
- September 29, 2026
- Data last checked
