Rating: 
Summary: Had to be returned
Review: I had to return this phone because I could not answer an incoming call via call waiting. I called the manufacturer who had me go through several steps to fix the problem. These did not work and told me that my phone was defective and that I should return it to where it was purchased. This is the second Siemens phone that I have returned. The first one was the 2415 that had VERY poor sound quality.
Rating:
Summary: Siemens 4210 call waiting switch problem
Review: I have exchanged the phone four times. And I still can not switch to another line using call waiting switch.
Customer support could not resolve the problem and recommended to return the phone to the store. Compared to my Panasonic 1000 this phone has very short operational distance. Walls are the killer of the reception (with Panasonic it is working just fine). The only positive experience I have with the phone is the sound quality. It is much better than Panasonic. I am very sorry about Siemens quality.
Rating: 
Summary: A great phone...
Review: I have had this phone (4210) for a few weeks now and am very impressed. Sound is incredibly clear. The handset is small and light and overall easy to work. The clarity is very good, with strong volume on incoming calls. I find the range to be good in our three level townhouse and have now made this phone the main system in the house. The speakerphone is excellent. I have not experimented much with the other features, but the ones I have used worked well and are intuitive. This was my second phone I bought to replace an old broken one and it is hands down better than the Panasonic I bought and promptly returned. Seems, however, that overall, cordless phone purchases may be hit or miss, or alternatively phones behave differently under different housing setups. I have never seen lower reliability on reviews of a consumer electronics device group. My advice, if you do buy a cordless phone, make sure you can return it!!! I'll update this review as I get more familiar with the system.
Rating:
Summary: Finally a phone that sounds good
Review: I just moved and needed another phone for my bigger house. My current cordless is an 8 year old AT&T. I forget what the Freq. of the phone is but it's not 900Mhz. I don't need many features but I know that you get what you pay for as far as quality is concerned so I went for the nicer models. I first tried a 2.4 Ghz Vtech phone which as highly rated. The phone had so much static compared to the AT&T and couldn't get near my computer without breaking up. I returned it. Next I got a 900Mhz GE and a 2.4 Ghz AT&T. The GE was better than the Vtech but still had static. At least it could get next to my computer. It was clumsy to use and was returned. The AT&T was a nice phone but had an audible hum and some static. In fact, it added the hum to the other phone when plugged into the same circuit. It was returned. At last I bought the Siemens 4210 since I had heard that the Siemens phones were suppose to be good. Oh the bliss! Finally a phone that sounds as good as my old one. It has a better range than the old one and has no trouble with computers or microwaves. I won't use all the features but the speakerphone is handy when you want to use the computer and talk to someone, or if you are on hold. The menus are intuitive and I figured out how to do most things without reading the book. Voice dialing is interesting and works well. Great product. Now I just need to buy another 4200 handset to add to the system.
Rating: 
Summary: Hold the phone!
Review: I just returned the 4210, but why you ask. First, the sound quality is the best, and I have tried alot of cordless phones, I've experienced. The voice mail feature apparently does not support both FSK and Stutter formats, so it did not work for me. Second, no headset jack on the handset! I have a home office, so a voice mail indicator and headset are critical features for me. The build quality was second to none, afterall it's made in Germany. I liked that you could use Ni-MH AA batteries, which provides flexibility of easy replacement. The speech dial feature does in fact really work, although if you use duplicate directory entries, you'll need to enter in normal and speech directories seperately. A coworker reported hearing intermittent clicking, which while annoying wasn't a show stopper. This phone is heads and soulders above the previous 2400 series, which were horrible. It broke my heart to return it, but my Panasonic KX-TG2650N is still the KING. Buy smartly.
Rating:
Summary: good quality, poor UI
Review: I was looking for a very clear, reliable cordless as I've always had back luck in the past. The Siemens has far surpassed all other cordless phones I've tried over the years (probably 5 others of various makes, etc.) But the menu system, phone book and overall UI is cumbersome, slow to use and sometimes counterintuitive. Sometimes I seem to get stuck in some mode where I have to hit End before I'm able to press 'talk' and dial. The user interface seems to be a sad knockoff of the Nokia cell phones. Stealing the Nokia UI would have been a much better idea. Overall the signal and sound quality of this phone is very good.
Rating:
Summary: Severely disappointed
Review: I was quite excited to finally see this phone on sale, so I bought it. I should have read the reviews first. The sound quality is horrible. It constantly clicks like someone is picking up another phone in the house. After 6 months, a majority of the buttons dont work. I have to push on them numerous times. The only good thing I can say is that the phone looks good and is comfortable in my hand.
Rating:
Summary: Lots of features...lots of clicking.
Review: I was really excited to get this phone, along with one other handset for our house - we don't have phone outlets in our offices, so the base/handset combination was a very welcome addition to our home. After minimal usage, however, it became readily apparent that there are some serious flaws with this product. First and foremost, the menu system is not at all intuitive, and are somewhat clunky to use. Next, there is a frequent, loud CLICK that both people on the phone call can hear, approximately every two or three minutes. I've tried to see if the clicking was caused by something in our house, but it seems to be something inherent to the phones themselves. Additionally, the battery life is sub-optimal, lasting only a day or two off the charger (which won't be an issue for many people.) The speakerphone is a nice convenience, as are the "copy entire directory to another handset" feature, the intercom and the 5-line LCD, but those items don't make up for the system's shortcomings. Apart from the low-volume static, and the rather loud clicks, sound quality isn't bad. It's a nice compact size, though if you frequently hold your phone "handless" between your shoulder and ear, this definitely isn't the one for you - you'll quickly get uncomfortable. I haven't tried the V-Tech, Sony, or other brand 2.4Ghz phones, so I don't know how they stack up against the Siemens; however, I do know that this phone isn't quite what I'd hoped for.
Rating:
Summary: A lot of features
Review: I was trying to find a good cordless phone from the internet.
I have received the 4210 phone yesterday but i couldn't use it outside the house ... it can only be used in an area of 70 feeds The phone has lots of features that made it desirable to me. Its small size, appearance, and voice quality are all excellent. The phone has many features and requires the user to spend some time reading the manual to figure them out. The voice dialing and voice announcement are excellent. In my opinion the only disadvatage is the signal ... I live in Cyprus and i don't know why i can only use it on one floor only ...
Rating: 
Summary: Don't Do It! OK phone; really, really terrible interface
Review: If you are considering this phone, I would recommend buying almost anything else. I tried very hard to like this phone. But the User Interface (UI) is simply so terrible that it turns a decent phone (with good range and sound quality) into an annoying contraption. Yes, it has alot of features. But my Ericsson T28 mobile phone has all the same features and is easy to use. The Germans should be embarassed at the incomprehensible design of their UI. Even if you are a gadget-head, the way many features are applied is annoying at best, useless at worst. Examples:
Voice-announce is cool, but the volume isn't matched to the ring-tone volume. Result: you can't hear the voice-announce unless you are so close to the phone you could read the caller-ID. The phone considers an un-answered call to be a "message", so the "message waiting" light comes on even if there are no voice-mails in my telco mailbox. The low battery beep is so loud it can cause deafness should you have the phone to your ear. It is also exactly the same noise as the "call-waiting" tone. The difference is the low-battery gives no visual indication at all, unless you hang up your ongoing conversation. The call-timer (one useful feature) allowed me to time a speakerphone call at 1:38 before the previously full battery was emptied. That's not acceptable battery life in my view. The speakerphone button is illuminated, but none of the others (such as talk and end). I can tell when the speakerphone is on so illumination does me no good, but just try to find the end button in the dark! Voice-activated dialing requires a very delicate touch on the circular multi-function button. It's so tricky to do successfully that simple speed-dial buttons are easier to use. The voice-dial list and the speed-dial list are entirely separate databases. Why? I won't even discuss the lengthy and confusing process required to program these two databases. My Ericsson T28 has a display that will hold the usual 11 digit phone number in large size type. This Siemens holds only 10 before switching to small type. The incoming call list does not show all the caller ID info on one "page". Pressing a speed dial button does not display the associated name, but only the number. Once the call is connected, it shows the name. I'd really like to know I pressed the right speed-dial *before* a call connects. Again, Ericsson does this properly, showing the name, not the number. Speed dial exists because people don't want to memorize a number in order to tell who they are calling. And a problem already documented in other reviews (and in a flyer inserted into the instruction book) was the last straw for this former UI designer: An incoming call-waiting call produces a display with caller ID info, and a soft key marked "accept". But that does not accept the call. You must press the "mem" hard key. That is downright stupid and misleading, and should have been corrected before this phone got out of beta. There's more, but you get the point. Let's hope Siemens fixes the UI and saves on customer service calls!
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