Frage
Antwort
Lösung
am 29.07.2020 23:39
Hi, I use 1000Mbps connection and over last month when I checked for download speed, the maximum speed I got was 400Mbps. When I contacted customer service, they sent a technician and charged who 99 euros to recommend that I have to use only with LAN!. Even with a special device he used which he connected with modem, he only got 850Mbps. Sitting next to router, I get 50-60 Mbps most of the times. Now, how can I get better speed and how do I have to use Mobile devices without LAN? Or is Vodafone telling we have to use devices only with LAN? Feels like I am in early 2000s with the very bad speed I get even sitting next to router. If I go to a different room, connection breaks and I even don't get 30Mbps.
On top of all this, customer service cuts the call when I request them to put me in touch with someone who can talk in English.
FYI, below is the picture from speedtest.vodafone.de for my 1000Mbps connection.
am 30.07.2020 01:34
If your line reaches the speed using LAN, there is no error on the line. And in that case, you're charged for the technician as there is no error that he could fix.
No one will guarantee you any speeds using WLAN as WLAN is prone to different error sources such as the existence and usage of other nearby WLAN networks, signal pathing of the wireless signal and many more problems with wireless signals. And even with nowadays WiFi standards like 802.11ax, it's quite unlikely to get up to 1 GBit/s using a WLAN connection; let alone slower standards like 802.11ac or even 802.11n that cannot even reach 1 GBit/s due to technichal limitations.
Main problem of any kind of wireless connection - but especially for WLAN - is that all users of the same frequency share the maximum bandwidth. And as the frequency spectrum for WLAN is limited, you'll definitely need to share that maximum bandwidth with your neighbours - especially if there are more then 2(!) other networks around.
am 16.08.2020 21:55
Even with WLAN connection, he wasn't getting 1000Mbps. He was getting 850MBps and when i requested for Wifi problem, what is the point of sending a technician who fixes the issue for LAN only and charging him for that? Also, Wifi device is given by Vodafone and are you saying that i should expect a 5% speed from a Wifi device owned by Voafone? Nothing of this was mentioned when i took the contract or even when i called. If this is the guarantee, i would have taken a better and capable network who can deliver on promises rather than charging money for sending technician who doesn't solve any problem!
Definitely, I have already informed some of my colleagues not to even think about Vodafone in the name of 1000Mbps as they get promised speeds on other networks and i can't even attend calls on this network and i can't carry LAN converters for mobile phones.
How on earth in 2020 you can tell me that i can only use your device with promised speed on a LAN connection with mobile revolution. Come on, please!
am 16.08.2020 22:13
Again: WiFi speeds are NOT part of the contract! In case the speed can be reached using LAN cables, the line is ok. And as WiFi uses shared frequencies and is prone to other kinds of distortion, there is no guarantee from any Provider that you'll get the speed using WiFi.
And just to give you some technical insight:
There is only approx. 80 MHz of frequencies available at 2.5 GHz band - which is barely sufficient for two(!) distinct WiFi networks running at 40 MHz bandwidth and thus delivering at max. 450 MBit/s each. And this is only possible if there are NO distortions, no other networks or any other users of these frequencies (e.g. no Bluetooth devices)!
Only in the 5 GHz band, there are more frequencies and thus more bandwidth available - BUT: Even there you have the same problem - every other network will reduce the speed of your network. Plus: 5 GHz has priority users (weather radar) - in case your device finds such a radar signal, it is required by law to turn off the sending function for some time (depending on the implementation, this can be up to 5 minutes!).
am 16.08.2020 22:56
That is really great info. Thanks for sharing.
I see two problems.
1. When I mentioned in the call about my problem with Wifi, they sent a LAN technician. They should have given this info and i wouldn't have requested a technician at all saving 100 euros for myself.
2. Even when the technician tested, he wasn;t gettingthe promised speed. he was getting ~850Mbps. Now you may say that is 85% ofthe achievemnt, but it is still not promised speed and to just put that in perspective that is 150Mbps difference which is nearly your next plan!
Even with these two problems, if you feel, i should be charged, i will rest my case here and consider it as my inability to express my problem.
Just FYI, i have asked my colleagues who use Deutsche Telekom and they mentioned that they get ~80Mbps on their 100Mbps connection on wifi in an apartment complex where there are 10 other flats and here I am getting 50Mbps on a 1000Mbps connection when there are only 2 other connections i see. I can understand some degradation(like 20-50% loss) but to the tune of 95% degradation is just unimaginable and it is consistent.
am 16.08.2020 23:10
a) Part of the speed tests is everytime that it is said that they have to be taken using LAN connections.
Thus if you ask for a technician to fix speed problems, this implies that the speed using a LAN connection is too slow.
b) 850 MBit/s is well within the bandwidth that is contractually agreed. Your line does not state that you'll get 1000 MBit/s at every time but that you agreed on a speed vector of 600..1000 MBit/s. As 850 MBit/s is within this range, there is no error at all.
And as I said - the maximum achievable speed is dependant on both, the usage of the frequencies by other networks as well as the chosen technology. 802.11n allows in theory at max. 450 MBit/s at 2.5 GHz, usually achieavalbe are 50..80 MBit/s at good connections. Thus what you achieve and what they achieve is nearly the limit of what WiFi, especially 802.11n and 2.4 GHz networks, are capable of.
If you want to have more than 100 MBit/s, it's nearly unavoidable that you have to use 802.11ac or better as standard in sole 5 GHz operation mode for all devices. Next thing is that you SHOULD NOT use any kind of repeater (as they cut the speed to the half because they need one time slot to receive date and another one to pass it on) buit only rely on distinct access points that are wired to the router using Gigabit network.
And the last thing: Gigabit Ethernet is capable of reaching speeds of approx 940 MBit/s due to the fact that you have to take all the package overhead away. So the link speed is 1 GBit/s, but you can only transfer (user) data with a max. of 940 MBit/s (rest is protocol overhead such as IP and TCP headers) over a single Gigabit link. Thus to reach the full 1 GBit/s, at least two devices have to be used in parallel -or- you'd need a cable modem/router with a NBaseT interface at least supporting 2.5 GBit/s operation (together obviously with a network card that is capable of running at 2.5 GBit/s).