Use both wifi and 4g lte data - General Questions and Answers

Hello, I have a dilemma. I have an instrument I can connect to via wifi. Once connected, this instrument can be controlled from my cell phone. This instrument has no internet. However, to fully works, this instrument must receive data from the internet. The issue is that when I am connected to wifi, my 4g lte shuts off. Is there a way to continue getting data whilst connect via wifi to an instrument that is not an internet provider? Thanks!

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WiFi won't disconnect when out of range

Hi all,
I have HTC One S from T-Mobile and noticed a big problem with my WiFi connection.
My phone will connect automatically to the wifi network in my home/work correctly, but when I leave and am clearly out of range of my wifi network (say, a km away), the phone still claims to be connected to the network, but I of course have no actual connectivity. The signal strength it reports has varied, from full strength to just a few bars.
I try giving it a minute, but it seems stuck and refuses to officially disconnect from the network. The only way to fix things is to toggle my wifi on and off, at which point it goes to mobile data since it can't find any wifi networks to connect to.
The thing is that I use Wireless Bluetooth headphones and since I started using my new phone, the signal drops (I believe it is because of the Wi-Fi not disconnecting from the network and is causing disruptions to the bluetooth connection).
Any ideas how to resolve this issue? Thanks.
NeoTheMatrix said:
Hi all,
I have HTC One S from T-Mobile and noticed a big problem with my WiFi connection.
My phone will connect automatically to the wifi network in my home/work correctly, but when I leave and am clearly out of range of my wifi network (say, a km away), the phone still claims to be connected to the network, but I of course have no actual connectivity. The signal strength it reports has varied, from full strength to just a few bars.
I try giving it a minute, but it seems stuck and refuses to officially disconnect from the network. The only way to fix things is to toggle my wifi on and off, at which point it goes to mobile data since it can't find any wifi networks to connect to.
The thing is that I use Wireless Bluetooth headphones and since I started using my new phone, the signal drops (I believe it is because of the Wi-Fi not disconnecting from the network and is causing disruptions to the bluetooth connection).
Any ideas how to resolve this issue? Thanks.
Click to expand...
Click to collapse
Already being discussed here:
http://forum.xda-developers.com/showthread.php?t=1617424
Sent from my HTC One S using xda premium

[Q] Wifi and Mobile data

I have Nexus 5 for over a week and waiting for case and screen protector. I left the plastic piece stay on the phone until the day before yesterday. I love the feeling of touch screen without any film or protector on it. I am learning this device.
I have router in my office powered but not working anymore, therefore there is wifi always on but not working anymore. Everyday in the morning, when I am in my office, the phone will detect that wifi auto, of course there is no signal. My mobile data is on all hte time. I have to turnoff wifi from the phone, otherwise I can not, for example, surf internet and check email. In the other words, no internet connection even mobile data is on.
So my question is: why the phone can not pick up mobile data automatically even there is a wifi? I was scared when i first had this problem because I thought my phone is not working. Is there any setting I can try to let the phone pickup signal from either wifi or mobile data automatically?
I'm interested also. Nexus 5 has a difficult time negotiating a signal when the signal is weak. At home, I get a higher powered signal on 2G so I keep it there. Today I noticed "no signal" and emergency calls message most of the day. (hubby's iPhone 4s is on the same service and he's getting the signal). I turned off Wi-Fi (which works perfectly, btw ) and phone signal connected. Treated it several times. Sounds like a hardware defect.
wolfca said:
I have router in my office powered but not working anymore, therefore there is wifi always on but not working anymore. Everyday in the morning, when I am in my office, the phone will detect that wifi auto, of course there is no signal. My mobile data is on all hte time. I have to turnoff wifi from the phone, otherwise I can not, for example, surf internet and check email. In the other words, no internet connection even mobile data is on.
So my question is: why the phone can not pick up mobile data automatically even there is a wifi? I was scared when i first had this problem because I thought my phone is not working. Is there any setting I can try to let the phone pickup signal from either wifi or mobile data automatically?
Click to expand...
Click to collapse
Your wording makes the question a little confusing, but I think you are saying your office router is turned on and available for WiFi connections, but has no internet connection itself to pass through to your phone.
Your phone connects to that WiFi for data, but can't reach the Net through the router. Meanwhile, you could get data through the phone data plan, but that does not work unless you turn off WiFi.
This normal. The phone is designed to use WiFi for data if a connection is available that you have authorized the phone to make. It won't use the phone data plan if connected to the WiFi, as you see. It cannot tell that the WiFi router is not connected to the Net.
I suggest you go into WiFi settings, click on the "ghostly" WiFi entry and tell the phone to forget that connection. From then on, the phone won't connect to that router and will use phone data plan.
What you would prefer would be for the phone to use its data plan as a fallback option, in case it gets hooked up to a WiFi network with no internet access, like at your work. Would be nice as an option, but not the way things work currently.
Sent from my Nexus 5 using Tapatalk
wolfca said:
So my question is: why the phone can not pick up mobile data automatically even there is a wifi?
Click to expand...
Click to collapse
To prevent overage for users that may have limited data plan, the device will always try to use WiFi when enabled. If it can't connect to a WiFi network, it will look for the mobile data if enabled.
wolfca said:
Is there any setting I can try to let the phone pickup signal from either wifi or mobile data automatically?
Click to expand...
Click to collapse
In your case, since WiFi is "available", there is no setting on the stock ROM that will tell the device to connect to mobile data instead. Think about it this way - your phone is connected to the LAN using the WiFi network. It can reach the gateway, and has a valid IP. It doesn't care about whether it has WAN connectivity or not. So, it assumes that you are connected, and have connectivity.
You could look for apps on the play store that will actually check for WAN connectivity and if not available, disable WiFi (so that mobile data is used instead)
But, the part that I don't understand is this: If you don't have WiFi available, why do you even enable it? Turn WiFi off (disable wifi scanning in advanced settings of WiFi as well), and let mobile data take over instead. Or do you need WiFi elsewhere (say, at home)? If so, there are apps like Tasker that will let you set up profiles to enable WiFi when you are at home, and disable it when you are at office or other locations.
Thanks all for your very helpful reply. Sorry for my poor written English.
My office router does not function properly and I am to lazy to power it off, so my phone still can detect it but of course there no internet access from the router.
I now know I just need turn off wifi from phone and the phone will pickup mobile data auto.

Does built-in wifi and GPS get used if connected to phone via BT?

I have the 3G version but dont have it activated on the carrier network. Since I only use it when tethered to my phone, is there any advantage to leaving wifi and GPS enabled on the watch? Does the watch use the bluetooth for all data when connected or does it use its own wifi/GPS in certain situations even w the phone connected?
Not sure about GPS, but the watch uses Bluetooth for network instead of Wi-Fi when connected to a phone. It will only connect to Wi-Fi if Bluetooth is disconnected.
Sent from my SM-N910C using Tapatalk

Can't see certain wifi networks

I just got this watch today and I'm unable to see certain wifi networks, particularly my campus wifi. I am able to connect to my cell phone's hotspot but that uses up my data plan very quickly. I downloaded this wifi manager app that lets me see my campus wifi but still doesn't connect to it.
Is there anything else that I can do to connect to my campus wifi?
Alternatively, can I get internet through bluetooth if my cell phone is connected to wifi? Is there a setting for this?
Thanks
Seems this watch is not supporting 5G network. You may check if your campus has 5G and 2.4G supported.

Wifi + 3G/4G simultaneously?

Hi,
my problem: I'm using my U11 in an aircraft for navigation. A anti collision device (FLARM/ADS) is connected via Wifi. That works fine.
BUT unfortunately I cannot connect to the web via 3G/4G at the same time.
I tried to set "Use always mobile data" in developer settings... no success.
As long as Wifi is on no chance to connect via mobile Data.
Is ther any chance to solve my problem? THX for your help!
All android is like this I think.
Connect to wifi = kill the SIM internet, cannot enable both on the same time.
It's not a new topic btw, like when we use a GoPro and using the hotspot to control it.
Fast network switching is as close as it comes but it still won't run wifi and cell at the same time. Wifi and cell must be possible because wifi calling uses WiFi and cell (when 4g is connected).
Can you not use wifi hot-spot in some way?.

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