1. Performance & Reliability: The WDINLY 4G LTE USB Modem offers decent speeds (up to 150Mbps) and reliable connectivity, even in challenging environments like airports or airplanes. Users report better speeds than their smartphones in such conditions.

2. Plug-and-Play Convenience: This modem is driver-free and easy to set up via USB, making it convenient for PCs and laptops. However, Mac users face compatibility issues due to outdated drivers.

3. Portability & Design: Compact and lightweight, this modem is ideal for travel or outdoor use. Its adjustable metal shaft helps optimize signal reception.

4. SIM Card Compatibility Issues: Some users struggled with unrecognized SIM cards or poor contact, leading to connectivity failures. Ensure your SIM is compatible before purchase.

5. Mixed User Experiences: While some users praise its reliability, others report frequent disconnections (especially with T-Mobile) or inability to establish a stable connection.

6. Limited Mac Support: Mac users may find it difficult to use due to lack of native USB tethering support and outdated drivers.

7. Customer Service & Documentation: The included manual is poorly printed, and finding online resources can be challenging. However, the product comes with a 30-day return policy and a 12-month warranty.