Wiki
Plain-language guides to points, cards, credit, banking, eSIM and travel
Short, sourced explainers you can read in a few minutes. Each one names where its facts come from and when we last checked them.
72 guides across 8 topics
Browse by topic
- Rewards basicsHow rewards, interest and statements actually work.6 guides
- Credit cardsSign-up bonuses, annual fees, issuer rules and the fine print.13 guides
- Points & milesAirline, hotel and bank points: how they are earned, valued and kept.8 guides
- Credit & your rightsScores, reports, freezes, disputes and the laws behind them.12 guides
- Banking & paymentsAccounts, IBANs, cross-border transfers and virtual cards.10 guides
- eSIM & connectivityStaying online abroad without surprise bills.7 guides
- TravelPaying, insuring and moving across borders.10 guides
- SecurityDisputes, scams and keeping your accounts safe.6 guides
Guides labeled “us”
- eSIM & connectivityKeeping a prepaid number alive: what 9 low-cost plans really cost per yearIf your bank still texts a number in a country you left, that number must stay alive. See what nine prepaid plans reported as their yearly cost to keep, what the validity rules are, and the registration and risk points to check before you rely on one.3 min readIntermediate
- eSIM & connectivityUS prepaid phone plans decoded: MVNOs, networks, Wi-Fi calling and real numbersCheap US plans come with jargon that decides whether the number works for you. Learn what an MVNO is, why GSMA and CDMA still appear on plan pages, how Wi-Fi calling lets you use a US number abroad, and how Tello, RedPocket and Saily compare.3 min readIntermediate
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