The X4 Pro 5G packs a 108 MP camera, quite an upgrade over the X3 Pro. The M4 Pro is a 4G version of the M4 Pro 5G from last year.
The All-Around Ace POCO X4 Pro 5G is Now Available in the UAE - News
POCO and Reply Totem join forces for the launch of the new POCO X4 Pro 5G and POCO M4 Pro Axes - News - Reply Totem
Xiaomi Poco X4 Pro 5G launch date revealed in new leak - News
POCO X4 Pro 5G and POCO M4 Pro are unveiled
POCO X4 Pro 5G Hands-on » YugaTech
POCO X4 Pro 5G vs POCO M4 Pro Comparison - Which one bags the price?
Poco X4 Pro 5G and Poco M4 Pro announced, both with AMOLED displays - news
POCO debuts X4 Pro 5G, M4 Pro - GadgetMatch
Poco X4 Pro 5G and Poco M4 Pro announced, both with AMOLED displays - news
POCO M4 Pro vs POCO X4 Pro 5G: Specs Comparison - Gizmochina