Somehow I can't set the speed to higher values than 19200 kbps. When I set it to i.e. 115200 and later check the value it's reset back to 19200. Does anybody know where the problem might be?
thanx
Koxin
The serial port speed is not used when connecting to the internal phone/modem. It should be greyed out, but Micorosft have to leave the OS open to other implementations by all those other vendors rushing to adopt Microsoft software...
So, if I understand you correctly, you don't need to specify the baud rate when creating a new GPRS settings because it's not taken into account anyway. Is that so?
When using the internal phone/modem then yes.
You do need to specify if you are using an external (eg IR) modem.
Related
I need to change it to 1400, but after endless searches I have no clue. Is there any way to change the mtu settings and what is the default mtu setting for the vibrant (is it 1500?).
I found this thread, but it deals with windows mobile phones.
I need to do this because many downloads time out and need to reconnect.
Not sure you I understand the need but here is a basic description:
If things are working correctly MTU is "discovered" when the session is initiated.
MTU can change anyplace in the path. There is so much equipment there is no way to know for sure.
The one place that MTU size has a large impact is when the do not fragment flag is set. Normally a device that cannot pass it will return a messages via ICMP that says fragmentation required but the flag is set and drop the packet. The client then resends it with a smaller MTU. When a firewall blocks this message (some people do not know ICMP is not always ping) you get very strange and hard to debug issues.
Packet fragmentation used to be a much larger issue. Depends what device is doing the reassembly of the packet. PCs now days have plenty of power and so do most routers and firewalls.
There is also the issue of extra overhead for the tcp header on the fragments but bandwidth is huge so that also makes little difference.
The only MTU settings that make a large performance difference is when you can run jumbo frames but this is limited to equipment that can support this.
I think the timeouts may be a result of tower traffic kick off and slow transfer rate, and changing the MTU probably won't make a difference unless you are trying to connect to a specific site.
Hope that helps...
when I tether my phone to my pc, I had trouble d/l files because they would time out and the tether connection would be dropped as a result
After changing the mtu for this connection on my pc from the default of 1500 down to a lower value, the files downloaded properly and there was no dropping of connection.
Now when I download directly from my phone (no tethering), the same thing happens where the downloads time out. I'm wondering if there is a similar process where I could change the mtu settings on my phone like I did on my pc so that it only accepts a certain size of packets plus header instead of the default which I think is 1500.
removing wifi scan ro. lines from build.prop & using setprop "on demand" wifi call?
If I understand correctly, many people add certain lines to their build prop to allow settings on the device as read only i.e ro.
However for many people having this as set could mean in such cases where wifi scan interval is set to hi (or more frequent i.e 20)to enable maintained wifi connection during calls....that they will suffer with some amounts of battery drain.
Other people who are not interested in wifi calling could (could and usually do) set the scanning to a much high (or infrequent scan value of like 180) this is fine in most cases where battery consumption is considerably less and more desirable and even better when coupled with a modem to suit their region, provider and band.
But lets say someone uses wifi calling, but they don't want to permanently "set" i.e. an ro line within the build prop to constantly scan 20 when they are not on a wifi call. This is mostly true for most wifi callers around, unless the phone they are using is a dedicated inhouse wifi device (and yes I have considered a nice lil cheaper to do this with my self) anyway I hope you guys can see where I am headed with this?
Could say a script be generated where when a process is enabled that it calls the script to ramp up wifi scanning to a smaller more frequent value 20 when "ON A WIFI CALL" (that being the process) and then revert to a lower value (set otherwise so to speak) and conserve batter when "NOT ON A WIFI CALL" ?
If so can someone direct me with how to go about doing this?
I am in the process of setting up an installation package for T-mobile users on ICS using Galaxy S & variants of....and would like to include in my installation package a way of detecting and removing the wifi scan intival from the build.prop ro line and then paste the my scripting within system.
I already know how to make a install script that does the detect and CHANGE or detect and REMOVE in the build prop for ALL types of ICS Galaxys.....however I am not sure about how to generate and then intitate an "on-demand" scripting for wifi calls? I assume that this is a setprop type function if so long as the ro function is gone (which is a read only and set at a higher precedent than any other functions if I believe right?)
Any help or pointed would be greatly appreciated.
James
Anyone know of an app that will boost my wifi speed at work over others?
Server speed is good just so many other devices and pcs it makes mine very slow. Its very frustrating 
Thanks in advance
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you can configure this on your wifi router. if your wifi ap is basic one it might not have this settings. but most routers come with option to set high priority, qos etc.
Im at work tho mate.. im sure this can be done with just my phone
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Cannot see how a receiver can receive priority over others without it being set at source .
jje
The whole point of Traffic shaping would be lost if any device can set itself to a higher priority.
Some packets can set an URG-flag which stands for least-latency routing instead of least-cost routing however it's still the router's call if he respects this and if yes how he treats them.
Something else is probably incorrectly configured. It's been reported several times that the S3 is very picky when several Wifi AP's with the same name (SSID) and in reach of each other are configured on the same channel (frequency). However most hobby-admins even know not to do that, so if your company is doing it you might suggest basic network training for your IT guys. (The basics of the Wifi protocol are in roughly the 3. semester at university)
You might want to try whether forcing the device to 5Ghz band will make it better since that band is far less crowded.
Also you could check WHAT causes the issues. Often it's not the bandwith by itself but either the router's connection table (a VPN to an external server is a very good but cumbersome solution) or the DHCP (use OpenDNS or Google DNS)
The whole point of Traffic shaping would be lost if any device can set itself to a higher priority.
Some packets can set an URG-flag which stands for least-latency routing instead of least-cost routing however it's still the router's call if he respects this and if yes how he treats them.
Something else is probably incorrectly configured. It's been reported several times that the S3 is very picky when several Wifi AP's with the same name (SSID) and in reach of each other are configured on the same channel (frequency). However most hobby-admins even know not to do that, so if your company is doing it you might suggest basic network training for your IT guys. (The basics of the Wifi protocol are in roughly the 3. semester at university)
You might want to try whether forcing the device to 5Ghz band will make it better since that band is far less crowded.
Also you could check WHAT causes the issues. Often it's not the bandwith by itself but either the router's connection table (a VPN to an external server is a very good but cumbersome solution) or the DHCP (use OpenDNS or Google DNS)
Click to expand...
Click to collapse
How do i change it to 5Ghz?
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slking1989 said:
How do i change it to 5Ghz?
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Click to expand...
Click to collapse
Go to wifi settings, press the menu button, chose 'extended' and select the frequency.
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Send from my Galaxy SIII going PARANOID
Dabarr said:
Go to wifi settings, press the menu button, chose 'extended' and select the frequency.
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Send from my Galaxy SIII going PARANOID
Click to expand...
Click to collapse
Dont see that option mate. Just wifi settings, advanced. No choice for frequency
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Because, according to your latest signature, you're on ParanoidAndroid which is not Sammy-based.
This information was lacking in your prior post.
Im using omega.. is this only possible on samsung based roms? Would it make much difference in me doing it? Id be happy to flash a sammy rom if it can get me a better connection at work. It takes around 10 mins just to post on here when im at work. And thats only after turning wifi off and on. I get good signal at work, and the speed tests are good. Hmmm
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Greetings,
First and foremost I stay in a dorm and I recently discovered that after so much use my college will limit my bandwidth. When I connect to their wifi I start with speeds of 54 mbps which drops to 6 mbps. I have no 4G access on campus and I've tried several methods to circumvent this bandwidth limit.
I've changed my Mac address and android_id in hopes that when I register my device it'll appear as a new device that won't be limited. This has failed every time. Am I missing another parameter that I don't know about? After researching, should I change my internal ip?
Objective: To make my device appear as a completely different device in attempt to circumvent a bandwidth limit placed on my phone.
I have root access + busybox. I use hex editor to change my mac address and android id changer v1.5 to change my android_id.
Anyone have any idea of what I can do?
Hello, I stumbled upon this app but I can not find more information about it.
Was wondering if someone could check into it. Main goal for this is to get better performance out of the wifi, but im not sure if it's good or bad.
If anyone uses it please let me know
Here's the link to the app:
https://code.google.com/p/mtuchanger/
XxXInstaXxX said:
Hello, I stumbled upon this app but I can not find more information about it.
Was wondering if someone could check into it. Main goal for this is to get better performance out of the wifi, but im not sure if it's good or bad.
If anyone uses it please let me know
Here's the link to the app:
https://code.google.com/p/mtuchanger/
Click to expand...
Click to collapse
Don't even think about doing so!
A maximum transmission unit (MTU) is the largest size packet or frame, specified in octets (eight-bit bytes), that can be sent in a packet- or frame-based network for example Internet. The Internet's Transmission Control Protocol (TCP) uses the MTU to determine the maximum size of each packet in any transmission. Too large an MTU size may mean retransmissions if the packet encounters a router that can't handle that large a packet. Too small an MTU size means relatively more header overhead and more acknowledgements that have to be sent and handled. Most computer operating systems provide a default MTU value that is suitable for most users. In general, Internet users should follow the advice of their Internet service provider (ISP) about whether to change the default value and what to change it to.
If you do so your normal Wifi range might get tweaked leading serious issues such as frequent wifi disconnects, no connection, may result in loss of the Wifi Direct Feature.
Phone may be soft bricked and phone may reboot every time any wifi network is availble. I suggest don't use this app until you are a developer!
Wifi range or speed can't be increased by any app. It depends upon hardware. Wifi a/b/g/n is usually faster than Wifi b/g/n so prefer buying a new device rather than using this app. It is purposely for developers.
Please hit thanks if I helped
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