Giasas,

Hopefully someone can answer me. The signal shows WEAK on this booster that I got from cosmote so I purchased this antenna from aliexpress: https://www.aliexpress.com/item/original-5dbi-4g-lte-antenna-for-huawei-b593-4G-LTE-router-external-antenna-for-B593-SMA/32298865416.html

It made no difference. Is there any setting that need to be activated in order increase the speed.

Many thanks.

Not sure which aftermarket antenna suits ha35. Try first to place it in a position with best signal perhaps next to a window
before testing other antenna. Try also to disable 4g.
Hope this helps