Documented specifications
Grandstream · Manufacturer documentation available at review; remaining support period and local availability not established.
| Specification | Documented value |
|---|---|
| SIP accounts | 2 Source ↗ |
| Display | 1.77-inch color Source ↗ |
| Wi-Fi | Dual-band Wi-Fi 6 Source ↗ |
| Bluetooth | Integrated Source ↗ |
| Battery | 1500 mAh Source ↗ |
| Talk time | 6 hours, manufacturer rating Source ↗ |
| Charging | USB-C Source ↗ |
| Provisioning | GDMS Source ↗ |
Unlisted fields remain unverified. Platform compatibility and remaining support life require confirmation for the exact ordered model.
What it is and why consider it
WP816 is a handheld SIP phone for staff who move within a managed Wi-Fi network. Its 6-hour rated talk time and 2 accounts distinguish it from the neighboring model; real endurance depends on radio conditions and use.
Reasons to choose something else
Use DECT when a separate cordless voice system better fits the site. Roaming features on the handset cannot repair AP coverage gaps or an inconsistent security configuration. The WP826 is not a weatherproof rugged handset.
Deployment and acceptance checks
Walk the actual work route during a call, including stairs, storerooms and AP boundaries. Check missed calls after idle periods and battery endurance over a real shift. Verify that USB charging and headset controls suit the worker’s routine.
Record the ordered model, hardware revision, installed firmware and calling platform together. Confirm administrator and provisioning ownership before connecting a previously used device. Keep the previous configuration and a supported recovery method before changing firmware; an arbitrary downgrade can remove security fixes.
Firmware, support and evidence
Use the linked Grandstream support resources to match the device to its approved firmware and provisioning instructions. The facts above come from manufacturer documentation; no hands-on measurements, current price or merchant offer are implied.
Where the table does not specify display, SIP-account capacity, network ports, PoE, Wi-Fi, Bluetooth, codecs, headset or expansion support, that field remains unverified for this record. A base station, handset and accessory have different responsibilities; do not copy a feature between them. Confirm lifecycle notices and support entitlement before a fleet purchase.
Sources & applicability
Primary references for the technical details above. Operational examples and planning checklists are VoIP.info editorial guidance.
Examples require adaptation to your topology. No live PBX or hardware testing is claimed.