LetMeBe

LetMeBe / Complete index

Every field note.

Current guides first. Revised archive pieces remain available when their narrower question is still useful.

  1. 01

    How to block an app’s internet on iPhone.

    Native cellular controls, DNS filtering, setup, verification, and limits.
  2. 02

    What DNS blocking can—and cannot—do on iPhone.

    The mechanism, useful boundaries, caches, shared hosts, DoH, and APNs.
  3. 03

    How to find the domains an iPhone app uses.

    A controlled Observation Mode experiment and safer host-rule workflow.
  4. A1

    Can offline filtering delay WhatsApp delivery receipts?

    A revised, non-guaranteed answer about receipts and filtered traffic.
  5. A2

    Keep work messages outside your evening.

    Expectations, Focus, notifications, and a reversible network boundary.