Internet and Wi-Fi facilities are available on the Everest Base Camp trek, with 3G coverage along the entire trail since 2010. The best mobile network is Ncell. We advise you to get a Nepalese SIM card in Kathmandu and buy tourist data packs. Most lodges provide Wi-Fi for a fee of $5-$6 for an unlimited package, while the Everest Link Card offers another option for connectivity. Cards of 50 MB to 100 MB can be purchased at stores in the Everest region at varying prices.