Phone number lengths across ASEAN's eleven members, from the regulators' own plans
How many digits follow the country code in each of ASEAN's eleven members, from the regulators' own numbering plans: Sin...
Guides & How-tos · Worked examples · Real numbers
Consumer Tech guides
Step-by-step how-tos, head-to-head comparisons and honest roundups — every guide worked through with current figures, then backed by a RECATOOLS calculator or AI-directory entry so you can act on it.
498 guides published
17 topic areas
Latest guide Oct 2026
Science
40
Statistics
33
Health & Wellness
31
Cybersecurity
30
Business
19
Privacy & Data
17
ASEAN Tech
13
Personality
9
Cloud & Infra
8
Cyber Threat Intel
7
Sustainability
5
Advertisement
How Chinese internet slang is made, and what the annual word lists keep
How Chinese internet slang is built, from yyds and 520 to 内卷 and 躺平, and what China's three annual 网络流行语 lists...
How to type a Chinese character in Wubi, worked by hand
In Wubi, 汉 is typed I C Y, and the Y is not part of the character. This guide works eight characters through the 1986 e...
Advertisement
Singapore's passport photo rules come in pixels and millimetres that never meet
ICA gives the upload in pixels and the print in millimetres, in separate documents that never refer to each other. Joine...
The pressure on your tyre's sidewall is a ceiling, not an instruction
The sidewall figure belongs to the tyre; the door-pillar placard belongs to the car, and it is the one to follow. But th...
A barcode does not tell you where a product was made
The chain message that reads country of origin off a barcode's first three digits has the standard against it. GS1's own...
No international rule says your passport needs six months left
Airlines worldwide enforce a six-month passport validity margin as though it were international law. ICAO Annex 9, the t...
The same iPhone has two official EU labels and they disagree
The EU register holds two Product Information Sheets for one iPhone 15 128 GB — Apple's and a Slovak refurbisher's. They...
What Is One Month After 31 January?
28 February or 3 March — both are in daily use, and your date calculator probably will not tell you which one it picked....
How Much Internet Speed Do I Need? Stop Multiplying by People
The usual method — one person's needs times the number of people — assumes a connection gets divided. We measured it: on...
How Much RAM Do I Need? Free Memory Is the Wrong Number
On a 17.2 GB laptop running a browser, a container stack and an editor, free memory read 0.06 GB — and nothing was wrong...
Why Is My Wi-Fi Slow? Usually, It Is Not the Wi-Fi
A page load is five separate stages, and the radio is only involved in one of them. Timed across three real sites, the W...
How to Format a USB Drive (and Which Filesystem to Pick)
Formatting takes thirty seconds; the dropdown decides whether the stick does the job. We built each filesystem as a real...
How to Clear Your Browser Cache (and When It Will Not Help)
Clearing the cache is the reflex, and it is usually the wrong lever. Measured on one of our own pages: the cached files...
Advertisement