This video shows how you can install external 4g antenna for your Globe Streamwatch Model SEI-120G
You can buy the Antenna, SMA connector and converter from the link below:
4G antenna
https://www.lazada.com.ph/products/network-external-ts-9-broadband-wifi-white-28dbi-sma-4g-3g-vertical-lte-antenna-i490344083-s1288512596.html?mp=1
SMA Antenna Cable
https://www.lazada.com.ph/products/2-x-6dbi-24ghz-5ghz-dual-band-wifi-rp-sma-antenna-2-x-35cm-ufl-ipex-cable-i329350025-s706600014.html?mp=1
Coaxial Adapter
https://shopee.ph/product/20295699/3712797161
