Grandstream WP820 Portable Wi-Fi Phone Voip Phone and Device, Silver

(10 customer reviews)


Brand Grandstream
Color Silver
Telephone Type Corded
Number of Batteries 1 CR123A batteries required. (included)
Material Plastic
Power Source Battery Powered
Item Dimensions LxWxH 0.8 x 2.2 x 7.1 inches
Answering System Type Digital
Item Weight 0.8 Pounds
Compatible Devices UCM6202

  • Dual-band Wi-Fi with efficient antenna design and advanced roaming support
  • Bluetooth for syncing headsets and mobile devices (contacts and call transferring)
  • HD voice & dual mic design with aec and noise Shield technology
  • Rechargeable 1500Mah battery, 7.5 hour talk time, 150-hour standby
  • Micro USB port and 3.5mm headset jack
  • Connectivity technology: Wireless


Grandstream IP Phone – Wi-Fi, Bluetooth

Additional information

Weight 12.8 kg
Dimensions 0.8 × 2.2 × 7.1 cm
Product Dimensions

0.8 x 2.2 x 7.1 inches

Item Weight

12.8 ounces



Item model number



1 CR123A batteries required. (included)

Date First Available

October 5, 2018


English, English, English

Country of Origin




10 reviews for Grandstream WP820 Portable Wi-Fi Phone Voip Phone and Device, Silver

  1. Buyin Guy

    for a wifi VOIP phone, it’s good..It’s not bad at all for a wifi based VOIP phone.setup is all via a GUI, and it is relatively straightforward.. Took only 2 or 3 minutes to connect with a FreePBX (asterisk) VOIP box, and it quality is….well, it’s Grandstream.. Not entirely sh**t… but not far from it. Of course that’s the Grandstream we’ve come to know and love, right?the biggest complaint I have is the ergonomics of the buttons.. it’s really got the typical cheap Chinese tech feel – buttons are sloppy, plastic is thin, etc..Most of the time you have press the buttons hard (or harder than you should need to), and almost every call, i find that i’ve miss-dialed a number or two because of it. I’ve configured dozens of Polycom Kirk systems (now called Spectralink), and the quality difference is night & day… a 10 year old Kirk phone sounds night & day better than the Grandstream, and the feel is well, professional vs bush-league…if i could convince VOIP clients to put up with the Spectralink handsets’ “old” GUI, i’d never place these in… but it is cheap, fast, and quasi reliable…

  2. Canary

    Does what it does, good for travelBeen using this phone on its second day and it seems it works better with 2.4Ghz WiFi frequency. There’s little to no interefence and you can walk around with it. I haven’t tested carrying it for long since I work from home. Although it’s very convenient if you need to grab or do some stuff around the house with it. Plus it has a 3.5mm audio jack so you can just press the PTT button (I set it to mute button) if need be.As for the interface, it looks like a very basic cordless phone. Nothing fancy. Nothing bad with it. You can adjust the settings directly to the phone or use the web GUI.As for the lines. Yes, it can connect up to two lines only with transfer, hold, mute functionalities. You can switch between lines if you need to call with either accounts. You just need to press the Accounts soft key for this. It also has an alarm and calculator which is handy sometimes.The look and feel seems better than a China phone to be honest. I’ve seen a lot of China phones and I have no issues with its design. It’s a very basic phone like one of those Nokia 5210 models but taller.This is my first Grandstream phone and I’m fine with it. If you can’t carry a DECT phone or a deskphone for travel, I’d highly recommend this. I don’t see any other WiFi phone as cheap as this but still provide comparable voice quality. Cheers.

  3. Gi

    Sufficient but issues with OpenVPNThe phone is a bit overpriced for the build quality, but the feature-set provides good value. The standard codecs are included, it supports wifi including cert-based authentication and encryption, color screen and instant messaging, pager capability and button mapping, and Bluetooth and speakerphone. Why I dropped a star for this product is because it doesn’t support OpenVPN multifactor, or OpenVPN with cert authentication, which for my use case, limits my ability to use this phone remotely. This, it will remain a desktop phone until they release a patch.

  4. Brett

    Works with Vertical WaveThis does work with Vertical Wave.. just update the WP820 firmware to the latest version from Grandstream’s site, then in the phone config, be sure to DISABLE “Support SIP Instance ID” and it will work as expected. If you leave this enabled, the phone will lose its registration with Wave within a few seconds of receiving an inbound call.Also if you aren’t using any video features, go through the phone’s setting and disable the video calling settings, otherwise it will prompt you each time you place a call if you want the call to be an audio call or a video call.Overall a good value Wi-Fi SIP phone.

  5. Eric Mcmaster

    Drops callsAfter a few months with 3 of these phones we are changing our review to one star. I can be at my desk using the phone and in the middle of the call it will drop wifi and drop the call. When wifi reconnects it will be on a different AP. The strange thing is that I can adjust the dB before the phone searches for a stronger signal in setting but it doesn’t seem to work correctly. For example I can have the setting at -80dB, have the phone stationary with a signal of -50dB and suddenly it will drop and switch APs, which will drop the call as it takes about 5 seconds for the phone to reconnect. We are on the latest phone firmware of and have looked through ad followed suggestions on the wifi roaming addendum on Grandsteam’s website in our investigations. Our APs are Ubiquiti, BTWSo it’s a inexpensive voip wifi phone. The setup has a really, really nice GUI interface. If you have used other Grandstream products you will immediately realize that they didn’t design the GUI in-house (which is a very, very good thing). On one phone we had audio problems, which can be hard to track down. The phone has some built in diagnostic features, including an audio loopback. By using it we quickly realized it was a hardware issue with the mic and swapped for a new phone on Amazon. Also, the belt loop thing is a joke. The phone is tall and when you sit down it will hit the chair and pop out of the holster. Overall there isn’t much available for wifi voip phones at a normal price point….

  6. Earl

    Grandstream WP820 Nice phone.Good voice quality. Reliable connection to my Samsung 3-node mesh WiFi in our large house. Even my wife likes the user interface. Took less than an hour to connect to my Grandstream UCM6102 VoIP PBX. Phone book (contacts) is functionally fairly robust but a bit awkward to use. Saving a caller ID as a contact saves the full ID as the first name and saves the caller ID number as Work Number. Gotta edit the contact to get it the way you want. Contact import file format not documented, so it’s difficult to transfer phone book from other phone systems. Lots of ringtones, but most are funky; wish I could download my own ringtone. Web interface is decent. Don’t yet understand paging and push-to-talk. Expensive when compared to DECT technology.

  7. Nick F.

    Phone is great, box contents not suitable.I have purchased a few of these recently, the phone itself works well. Performance on hosted VOIP platform over WiFi is great and it roams between AP’s without drops.Why does it keep getting delivered with EU chargers though? The last 2 have both come with the incorrect charger and all Amazon seem to be able to do is to refund it… I want to buy it from you because I want the phone, pack the correct charger.

  8. Amazon Customer

    Standby time is not 150 hoursthe 150-hour standby time is never achieved, tested two of the same phone and without any talk the actual standby time is between 24 to 48hrs max.The manufacturer need to confirm this as is this a battery issue or over statement of 150-hour standby time?

  9. Markus

    Mal was anderesHabe mit dem Telefon meine zwei DECT Sender abgelöst, da die WLAN-Abdeckung mindestens genausogut ist.Folgende Erkenntnis: Es gibt bei mir im WLAN einen fast toten Spot, bei dem das Roaming schlecht funktioniert. Bedeutet, dass das Telefon piepst und einen hohen Packet Loss reklamiert, wenn man sich schnell durch die Zone bewegt. Die Verbindung bleibt erhalten.Was unterirdisch ist – zuvor hatte ich einen gigaset n510 ip pro – ist die Konfiguration. Hier muss man zwingend vom Fach sein, sonst versteht man nichts.Router: OPNsenseWLAN: Unifi

  10. Danny

    SIP Telefon via WLAN und ohne ControllerIch habe mir das Telefon zugelegt als eines der wenigen, das folgende Kriterien erfüllt:- kommt ohne Gateway (Fritzbox, Speedport o.ä.) aus- nutzt WLAN statt DECT (da hätte ich Repeater oder eine Station gebraucht)- kann 2 SIP-Accounts verwalten- erfüllt den Wunsch nach einem “Festnetz-Telefon” Feeling (heutzutage Quatsch, aber die bessere Hälfte braucht das)Bin rundum zufrieden. Software ist nicht besonders sexy gestaltet, erfüllt aber ihren Zweck und die Einstellungen sind für technisch versierte Leute umfassend auf der Weboberfläche, etwas vereinfacht für weniger versierte Leute auf dem Telefon selbst. Man muss ein wenig sich einlesen, was die Einstellungen des Internet-Anbieters angeht, aber mit etwas Recherche ist das Telefon ruck-zuck lauffähig.Das Telefon, und Voice-over-WLAN generell, ist auch ein guter Test für die WLAN Qualität. Wenn der Ton etwas stottert unbedingt mal das WLAN prüfen, ggfs. ist 5 GhZ die bessere Option.Bin hoch zufrieden mit der Lösung aus technischer Sicht. Verarbeitung und Material ist für den Preis aber etwas unterwältigend, das muss man schon zugeben. Ich hoffe der Anbieter macht dies mit laufenden Sicherheitsupdates die nächsten Jahre wett.

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