Hello! When it comes to open-line and budget-friendly 5G WiFi devices aside from the ZTE F50, you may consider the following options:
1. Huawei 5G CPE Pro: Huawei is known for its quality products, and the 5G CPE Pro offers high-speed connectivity and good coverage. It is open-line and may fit your budget.
2. TP-Link 5G Routers: TP-Link offers a range of 5G routers that are open-line and budget-friendly. Models like TP-Link Archer CPE610 are worth considering for their performance and price point.
3. Xiaomi Mi AIoT Router AX3600: Xiaomi's 5G router is another option to consider. It provides good performance, coverage, and is known for being open-line.
Before making a decision, it is advisable to compare the features, prices, and reviews of these devices to find the one that best suits your needs and budget.