The record keeps what was said.
Messages typed on the phone. Messages the other side deleted. The wording before an edit. The record keeps each one.
Every linked number syncs both ways.
A message typed in WhatsApp on the phone, outside MobileB, lands in the record like any other. History imported on first link covers roughly the most recent 200 messages per conversation; everything after that is kept as it happens.
- Sent from the phone, outside MobileB. Recorded.
- "This message was deleted." Your copy stays, marked deleted.
- Edited. The earlier wording is one tap away.
- Receipts paused. Read everything; no blue ticks leave.
Your copy stays, marked deleted, in place.
When the other side deletes a message for everyone, MobileB keeps your copy and labels it. It notices deletions even when WhatsApp does not announce them, by reconciling the conversation against what WhatsApp still holds. An edited message shows the current wording and keeps the earlier one, word for word.
WhatsApp normally withholds view-once content from linked devices, so MobileB records the marker and tells you to open the content on your phone. If WhatsApp does deliver the payload, MobileB retains it and labels it as view once. Disappearing messages are kept as ordinary messages because MobileB does not honor WhatsApp's disappearing timer, and the people you talk to should know that a record is kept.
Silent reading, per conversation.
Pause read receipts for a conversation and read freely. Their receipts still arrive. The row shows an eye-off mark until you resume.
Per conversation, not a global switch.
Their blue ticks still reach you. Only yours pause.
Kept until the account is deleted.
History is stored under your account and served to you, to people you shared it with, and to agents you authorized, within the scope you set. You can delete a single message for yourself at any time. There is no way to delete one conversation on its own yet; deleting your MobileB account removes everything. Unlinking a number ends its session and keeps its history, which is a deliberate distinction the privacy policy spells out.
The record is your copy of your conversations. Sharing it is always your decision, and the sharing page explains how.