What if the 
Reseat the handset; make sure the contacts on the bottom of the handset are lined up with the contacts in the charging cradle.
Check the AC adapter connection.
Make sure you are not using an outlet that’s controlled by a wall switch.
DECT2035+2, DECT2035+1, DECT2035 specifications
The Uniden DECT2035 series, including the DECT2035, DECT2035+1, and DECT2035+2, offers a modern and reliable communication solution designed for home and small office use. These cordless phones utilize DECT 6.0 technology, which provides superior sound quality, an extended wireless range, and enhanced battery performance compared to older telephone technologies.One of the standout features of the Uniden DECT2035 series is its impressive call clarity. The DECT 6.0 technology ensures that conversations are clear and free of interference, even when multiple devices are in use. This technology also operates on a frequency band that minimizes interruptions from Wi-Fi networks and other wireless devices, making them ideal for busy households.
The DECT2035 series is designed with user convenience in mind. Each handset is equipped with a large display, which makes it easier to navigate menus and view caller ID information. Additionally, the bright backlit screen allows for easy visibility in low-light conditions. The phones come with a built-in speakerphone, making hands-free communication more convenient during multitasking.
The Uniden DECT2035 also features an impressive phonebook capacity, allowing users to store up to 100 contacts, making it easy to keep in touch with friends, family, and colleagues. Other notable characteristics include customizable ringtones, call waiting, and caller ID capabilities, ensuring that users can manage incoming calls with ease.
For enhanced functionality, the DECT2035+1 and DECT2035+2 models include additional handsets, providing flexibility to use multiple phones throughout the home or office. This feature is particularly useful for larger spaces where a single handset may not suffice.
Moreover, these models offer a range of smart features, such as call blocking, allowing users to prevent unwanted calls from telemarketers and robocalls. With features like intercom between handsets, users can communicate effortlessly without picking up the phone line.
In conclusion, the Uniden DECT2035 series is a versatile and sophisticated option for anyone in need of a dependable cordless phone system. Its combination of advanced technology, user-friendly features, and expandable options makes it an excellent choice for modern communication needs. Whether you're making local calls or crucial business communications, the DECT2035 series ensures you stay connected with clarity and ease.