This is the offical LG F90 (LG-AS876) user manual provided from the manufacture.
LG and Associated Carrier Group (ACG) member carriers will release the LG AS876 as LG F90 in the U.S. One model variant of the LG F90 with model number LG-VS876 is available as Lucid 3 from Verzion Wireless.
Those who are interested in the LG F90 from ACG can grab the handset’s owners manual from below links:
Download LG F90 (LG-AS876) User Manual
Download:LG-AS876_ACG_UG_EN_Web.pdf
Download: LG-AS876_ACG_UG_ES_Web.pdf
If you are looking for LG F90 specs in details, please see LG Offical page here.