Huawei Mate 90 series to support four cards, three active lines via OTA

The real signal here is not the card count but the delivery method: a flagship capability arriving as an OTA update means Huawei is treating multi-line connectivity as software-upgradable differentiation, which raises the bar for rivals who ship such features as fixed hardware specs. It matters most for frequent travelers and multi-number users who currently juggle devices, and for carriers whose provisioning systems must handle three simultaneously active lines. Whether the feature reaches the broader Mate 90 line on the same timeline, and how carriers support it, is the open question.