About Xavier Fok

I run Singapore Mobile Proxy and cloudf.one, a small physical mobile-proxy and cloud-phone farm in Singapore. I write multiaccountops.com because most reviews of the tools in this niche are written by affiliate-only writers who have never actually run the product against real traffic on real hardware. I have, and I publish what I find.

Background

15+ years in digital marketing, content, and advertising. Started agency-side, moved client-side, now run my own infrastructure business.
Background in data analysis and AI engineering. Python, SQL, modern web stack.
Owner-operator of a Singapore-based mobile-proxy farm: live modems on Singtel, Starhub, M1, and Vivifi carriers, plus a cloud-phone fleet of Samsung Android devices.
Sole writer on this site. No ghost-written content, no AI-written content shipped without manual review and humanization.

Why this site exists

The tools reviewed on multiaccountops.com are the same tools I use, or have considered using, for running 50 to 5000 accounts across the operator internet. Because I run the underlying hardware that most of these tools sit on top of, I see two things most reviewers miss:

Which tool actually works against modern detection (Fingerprint Pro, DataDome, PerimeterX, Sift, MaxMind, etc.) and which one quietly fails the moment the target site upgrades.
Which vendor actually has the infrastructure they claim. Some “residential proxy” providers are reselling datacenter IPs with a frontend layer that lies to the user. I can tell the difference because I have my own pool to compare against.

How to verify what I say

The reviews carry methodology sections. Where I have tested, I list the target sites, the test duration, the success-rate baseline, and the failure modes I observed.
Where I cite vendor pricing, I link to the live pricing page so you can verify it has not silently changed since publication.
Where I cite third-party data (academic papers, news, vendor docs), the citation links to the primary source and not to a summary blog.

Contact

Email: xavier (at) singaporemobileproxy.com
For story tips on a specific vendor that is misrepresenting itself, email is fine, response within 48 hours.

What you will not find here

AI-generated reviews that have not been read by a human.
Pay-for-placement: vendors cannot pay to appear in a “best-of” list, and a paid affiliate relationship does not move ranking position.
Made-up “user testimonials” or fake comment sections.
Anything I would not have shipped under my real name to a paying B2B client at my last agency role.