with antenna it did somehow improve the performance .... ito ung bagong observation ko na with external antenna na...
Using Auto, 4G Only, 4G-FDD (1800MHz) B3, 4G-FDD (700MHz) B28, 4G-TDD (2500MHz) B41
Tested na syang lahat pero ung connection is not stable maya maya napuputol o sobrang bagal...