Question about Vtech i5808 Cordless Expansion Handset

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We are having similar problem with vtech 5808

We are having that same problem of handset dropping calls and searching for base what is the best course of action to fix this problem. the handset also no longer finds the base

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Install new batteries! Be sure to let them charge fully (overnite) before first use.

I have 5 of the i5808 expansion phones around my house - most about the same age - and they all started acting up ithin a few months of each other. I "experimented" with a new battery for one, and it solved the issue for that one I replaced the batteries in each of the others that were experiencing the problems. This was about 2 to 3 months ago, and all phones have been problem-free since the new battery installs!

Hope this helps.

Posted on Feb 01, 2009


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Bought a used vtech 5.8 phone, charged the battery and now see message "not registered. I can not make calls... how do I register it?

I believe it is telling you it is not registered with the Base Unit. You did get the Base Unit with it didn't you, otherwise you have a paperweight.

If you do have a set then this is the answer

Tip 1 of 1
Step 1: Place the handset in the base or charger. If PRESS FIND HS 4 SEC ON BASE does not appear on the screen after a few seconds, lift up handset and recradle it in the base or charger.

Step 2: On the telephone base, press and hold FIND HANDSET for approximately four seconds. Release FIND HANDSET once the IN USE light comes on.

After a while, the handset will emit a series of tones, and the newly registered handset will be assigned the lowest extension number not previously assigned to another system handset when successfully registered. Repeat Steps 1 and 2 if the handset does not successfully register to the telephone base within two minutes.

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Video as well in link

vtech 5 8 phone Google Search

Jul 17, 2017 | Vtech Lands Phones

2 Answers

Vtech 5808

Hi it sounds like the problem is with either the base unit board or the board on the phone.
Do you have one main phone plugged into phone socket and the other two are extra phones that just plug into mains and pick signal up off the main phone if this is the case then the problem will be with the main base unit.
So first thing i would do is check the cable to the phone from phone socket is secure and hasnt been trapped under furniture or somebody triped over it and damaged the wire.
If this is not the case then the problem will be with the base unti itself and as the waranty has ran out this usually means that the phone was only really supposed to last untill this time this is the same with most electrical unit you buy.
The problem could be something as simple as a bad solder on the main board near where the signal is sent from the base.
I would say that the actuall phone is not to fault because if the main phone was at fault then the other 2 would work fine.
If you are ok at taking electrical units apart and can test the board near the signal output on the base it might just be that the solder has failed after this time.
If the phone works for a short while before it dropps the calls then it more than likely is a solder problem the thing is it is difficult to get a spec sheet for these phones i will look and if find one let you know.
Have you tried plugging a different phone into the phone socket to eliminate a problem at the phone exchange let me know how you get on and ill let you know if i find anythnig for you ok

Dec 01, 2007 | Vtech i5808 Cordless Expansion Handset

1 Answer

How do I register my vetch cordless phone?

General - Product Troubleshooting - VTech® Cordless Phones

VTech Communications Inc.Step 1: Place the handset in the base or charger. If PRESS FIND HS 4 SEC ON BASE does not appear on the screen after a few seconds, lift up handset and recradle it in the base or charger. Step 2: On the telephone base, press and hold FIND HANDSET for approximately four seconds.

Product Registration - VTech® Cordless Phones

VTech Communications Inc.Vtech DECT 6.0 cordless phones are among the most advanced and innovative homephones on the ... Product Registration. How do I register my product?

vtech cordless handset, how to register - YouTube

? 3:21
Feb 22, 2015 - Uploaded by Brian Williams
i registered my handset but im not able to call and answer call from my ... you lose your phone you have to de register allphones and start over.

Jan 21, 2016 | VTech Communications CS6114 - cordless...

1 Answer

How Long Do I Have To Charge My Vtech 5808 Battery?

Lithium batteries can be charged whenever you want for however you want. It is best to charge the phone overnight. you cannot overcharge the battery, and you do not need to deplete it before recharging it. Older batteries had a problem in which improper charging would damage them, but this kind of battery does not. Best of luck!

Feb 28, 2011 | Vtech 5808 Cordless Expansion Handset

1 Answer

Vtech phone 5808 how long do i have to charge the battery before using

You should wait at least 2 hours before using it so that it can properly charge

Feb 28, 2011 | Vtech i5808 Cordless Expansion Handset

1 Answer

Says it's unable to connect. I assume to base phone.

you have first to page the phone on basis set then you can use the hand set

Nov 06, 2009 | Vtech 5808 Cordless Expansion Handset

1 Answer

VTech 2420 handset will not promp me to key in the base ID

If the other three handsets work ok then you have a defective handset.

Mar 17, 2017 | Vtech VT 40-2420 Cordless Expansion...

1 Answer

My phone keeps saying unable to connect

is your phone about a year old? It may be the battery. The vtech phones have weak batteries that clunk out after about a year and you'll get dropped calls, looking for base etc... The phone still appears to be working and the battery indicator tells you it's charged, but the battery is too weak to keep the wireless connection going.

Had the same problem and replaced the battery. had the cheapest ones. But it's a knockoff, so I don't know how long it will last. So far it's been 3 months and the problems are gone. I would try that first and see how it goes. I paid about $15 including shipping. If you buy it from vtech it's at least double...

Sep 24, 2008 | Vtech i5871 Cordless Phone

1 Answer

5808 drops call and starts searching for base

Got a wireless router? Change channels on the router off Ch6, the default channel and that may help your phone communication to the base station. I have had wireless phone customers lose their wifi when their phone rings, same frequency or intereference on that frequency.

Feb 13, 2008 | Vtech 5808 Cordless Expansion Handset

2 Answers

Vtech 5808

This model of phone have serious problem regarding the battery. This phone use a lot of juice out of the battery. I'm pretty sure that when your battery is foul charge it doesn't do it. So the problem is in the handset. When your battery starting to get to low you loose your connection. Why?...Because the detection to LOW_BATT in your handset is not calibrate adequately. So it thinks that the batt is weak, to weak to make a conversation.

The other problem could be that your handset doesn't really foul charge your battery. So when you are to far from the base or talking for to long . There's not enough power in the battery to raise the output signal level(db) to your base.

Nov 05, 2007 | Vtech i5808 Cordless Expansion Handset

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