Systems and methods for remote device customization and modification are provided. Various embodiments remove the need for a carrier to source multiple types of the same user equipment. In some embodiments, the user equipment can be customized upon activation using network communications. Historically, a carrier might have a variant of a phone for each mobile virtual network operator. However, management of the inventory and custom builds can be difficult and expensive. Some embodiments provide for a single global SKU and a single blank-slate device from an original equipment manufacturer. Carrier detection can be used when the phone is activated to create customized phone settings. For example, the look and feel can be updated to match preferences of a carrier (e.g., wallpaper, ringtones, default apps, etc.), corporate client, family, or another specified group of users.