FA-96483 / Phone number formatting / Member archive

Display masking of subscriber digits: four-digit numbers are shown in full · case 03

"+8 1122" is displayed unmasked.

Member previewVariant 3 · 3 implementations · 7 checks per implementation

Case contract

Strip. A leading "+" and the digits right after it (the country code) are shown. Among the remaining digits only the last four are shown and the others become "*"; separators are kept. If four or fewer digits remain they are all masked.

Why this case matters

Masked numbers appear in receipts, logs and support tools; revealing too much leaks personal data and revealing too little makes verification impossible.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixture	Actual	Expected	Outcome
four subscriber digits are fully masked	`"+8 3344"`	`"+8 ****"`	Failed

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