Rating: 
Summary: Ineffective, Fault Prone Technology
Review: I bought a Siemens Gigaset 4015 and several 4000 handsets a year ago, and have had nothing but trouble with them. They cut off phone calls in mid-conversation, and are so unreliable, I can no longer use them. I've called Siemens Technical Support multiple times, and am given useless troubleshooting tips. What's been my solution? I bought an inexpensive AT&T cordless phone from my local drugstore, and it works like a charm. The low $ AT&T phone beats the higher $$$ Siemens phones hands down. I don't buy all the excuses that try to make up for the Siemens cordless products' faults -- my AT&T cordless works like a champ in a home that has a wireless network, where I use my microwave, and where I do all the other everyday things a good phone should be able to handle.
Rating: 
Summary: clear voice quality and nice features
Review: I bought the 4000 as a remote to my 4210. It was a mistake. The 42XX series will automatically download your adddress book. The 4000 does not have this feature. You will have to input you phone numbers again. The 4200 adds voice dialing and called ID. For a basic remote in a Siemens phone network, this phone will be fine. I use mine with a Vonage VOIP (cable) phone system and it works great. It broke my heart to say goodbye to Verizon. NOT!
Rating: 
Summary: Don't buy these if you have a wireless network
Review: I have a set of three of these phones (my mistake to buy all at once). They have had problems from Day One. I have had to return them to Siemens -- only to get the same problems back. None of their recommended fixes have worked. And worst of all, customer support has been atrocious. I recommend not buying these. I bought two other 2.4 Ghz phones from AT&T, and they have been flawless in the exact same environment.
Rating: 
Summary: One of the most stylish 2.4 Ghz phone out there!
Review: I have been using this phone for almost 2 years now and the only problem I have encountered is with the base charger refusing to charge if the phone is not placed exactly upright. Otherwise, reception is always crystal clear, range is incredibly FAR! I live in second floor, I took my phone to the basement through elevator and the only static I heard is after I got into my car! Every time my friend came to my place the look with awe at this stylish phone. I would recommend this to everyone who wants a quality phone that doesn't have those geeky style in it.
Rating: 
Summary: Good overall, but one key problem.
Review: I just discovered in another review here that there truly is no mute function. I had been searching the Web for advice on how to do just that. With small children and regular concalls, I need to be able to mute. Ack. I am happy with this phone otherwise.
Rating:
Summary: A great phone for the price.
Review: I love the phone for all its features - alarm, clock display, 10 ring tones, volume settings, the ability to lock to key pad with a single touch of a button, ability to disable the ring again with a single touch, ability to change ring settings based on time, etc. In my case the ring automatically disables from 9PM to 6AM. I have tried other 2.4 gig phones, and none comes closer in this price range. Yes, it does not have a face contour. Well that's why you use a headset which plugs into this set to keep your neck muscles in good shape. The ability to use NI Metal Hydride or NiCd rechargable batteries is a big plus. I would not have to spend a fortune ordering special batteries in the future. Again please never use regular batteries. The product is made in the US, where people are paid fairly. Compare that to how China comes up with cheap [stuff] to dump in Canada and the US. I had an issue with a Siemens product a year or so ago, and they went out of their way to keep my business.
Rating:
Summary: Pleasantly Surprised
Review: I love this phone, but my only complaint is that it lacks any face contour, making it nearly impossible to shoulder against your head. But, nobody's making phones like that anymore... sigh... :-)
Rating:
Summary: Great quality phone, but lacks face contour
Review: I love this phone, but my only complaint is that it lacks any face contour, making it nearly impossible to shoulder against your head. But, nobody's making phones like that anymore... sigh... :-)
Rating:
Summary: Good overall, but one key problem.
Review: I really wanted to like this phone, but here are the problems: 1. When a headset is plugged in, the volume (for listening) is too low and can't be turned up sufficiently. (This is not a problem with the headset.) 2. No mute button. Terrible if you use the phone for work/meetings. 3. Limited speed dial. I like to program access codes (like mailbox number and password), since I use my phone for work purposes. I can't do that with this phone. 4. The buttons are not very responsive and there is a delay until you hear a "beep" indicating that you pressed a button. Sounds petty but the result is that, when dialing, you often miss a number but don't realize it until it's too late. Then you have to start over. 5. The size and shape of the phone are not conducive to holding it between your head/ear and shoulder.
Rating:
Summary: Thumbs Down (Low Headset Volume, No Mute,Other Shortcomings)
Review: I really wanted to like this phone, but here are the problems: 1. When a headset is plugged in, the volume (for listening) is too low and can't be turned up sufficiently. (This is not a problem with the headset.) 2. No mute button. Terrible if you use the phone for work/meetings. 3. Limited speed dial. I like to program access codes (like mailbox number and password), since I use my phone for work purposes. I can't do that with this phone. 4. The buttons are not very responsive and there is a delay until you hear a "beep" indicating that you pressed a button. Sounds petty but the result is that, when dialing, you often miss a number but don't realize it until it's too late. Then you have to start over. 5. The size and shape of the phone are not conducive to holding it between your head/ear and shoulder.
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