Mac and iPhone don't see each other

This isn't just with Home Sharing, but with other apps that use wifi to connect, specifically iAccounts and iBackup, but I couldn't find a more appropriate community.
My iPhone and MacBook Pro are connected to the same wifi network, one has 192.168.1.64, the other is 192.168.1.65, both can connect to the internet with no problems, both have full signal strength. So why can't they see each other? Sometimes it works, when everything is turned off then back on again, but sometimes that doesn't work. Last time it worked only after I reset my router, which suggests maybe the router is the problem. It's a BT HomeHub 3, which probably doesn't mean much to most of you, so give me general advice. What settings should I look at? Could it have something to do with my Mac connecting via 802.11 N and my iPhone 802.11 G? It's a 3GS, so it can't do N.
Both Mac and iPhone have the latest OS (10.6.8 and 4.3.3).

I stumbled upon the answer by searching other (non-apple support) sites for this problem. Apparently (and non-intuitively), "personal hotspot" (aka internet tethering) must first be enabled before attempting to establish a BT link. The reason I say non-intuitive is:
Firstly, bluetooth is supposed to be a stand-alone wireless networking protocol that doesn't require another wireless network to be available for it to work. What other sort of device (computer or otherwise) requires an existing network to be in place before BT will work?
Secondly, if tethering via personal hotspot is a prerequisite for a BT link, why is there no pop-up message advising of this when BT is turned on? Something like "Hey idiot, you need to turn on personal hotspot before you can establish a bluetooth link!" Or better yet, why not automatically turn on the hotspot when the BT button is switched on?
Thirdly, it really makes the BT shortcut button (in the home screen control center) worthless if you've still got to manually drill down into the settings menu to turn on hotspot anyway.
I scrubbed all apple user support articles related to using BT and pairing the iPhone with iPad that I could find to make sure I hadn't missed this new requirement somewhere - and I don't see it mentioned anywhere (although I'll admit that steam was coming out of my ears while I read it, so I may not have been in the best frame of mind to catch any new information). In the BT troubleshooting article, it mentions every check-this and check-that step but nowhere does it say make sure that personal hotspot is also turned on! I submitted feedback at the bottom of the article; hopefully they'll update it.
Thanks, Lyssa for bearing with me through all of this, which in the end turned out to be a user error. Although I consign myself to some comfort in knowing that this is not how it worked prior to iOS8. And as soon as I can find a phone on iOS7 or older, I'll confirm that.

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Macbook Pro (2010) and iPad don't see each other on same network

I'm running OSX10.10 on a MacBook Pro 15" mid 2010 and a brand new iPad Air running iOS 8 on the same wifi NETWORK with bluetooth activated (and not) - AND AIRDROP DOES NOT RECOGNIZE EITHER DEVICE!!!! I've gone through every system preference option on both devices and nothing changes - PLEASE HELP

I went home that night and done the same with AVG antivirus. Can't believe it was as simple as that.
configure your antivirus software like AVG or Norton to allow file and printer sharing as well as allowing your windows firewall to do the same.
Mine was in AVG firewall > settings (or Configure) > system > file and printer sharing......................just click on the dropdown box to allow.
As soon as I done this I went to my network places and the network files were visable.
other settings in there also solved my remote desktop problems.
Why couldn't I have thought of this 6 months ago.
PP

Windows 7 computer, and my macbook pro on snow leopard don't see each other?

My windows 7 computer, and my macbook pro on snow leopard don't see each other. I have configured the windows section under the network prefrences with the required information, and still no luck. Does anyone have any sugestions for me?

Shouldn't they see each other and let me use each of their files?
Please pardon the obvious here, but have you checked to make sure that you have enabled the File Sharing option on both computers? You may have already done this, but your post did not mention this, so we can only go with the info that we have.
If you have not enabled File Sharing, I can't help on Windows, but on your Mac...
Open System Preferences (gear icon on the dock)
Open Sharing
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IMac and Macbook can't see each other via Airp

Except sometimes.
Using Leopard on both new machines, I can share Internet connections and printers fine. The problem is in trying to mount volumes or share files.
I create a network on the iMac, connect to it on the Macbook, and use the appropriate password on both machines. I've set file sharing preferences perfectly and confirmed that at the store.
Sometimes, from the Go menu I can find one machine from the other. Sometimes I can't. When I find them, file sharing and accessing work fine--although for some reason, the volumes do not mount on my desktop! I have to use the Go Network menu item.
But other times they just don't see each other. I only get this to work by REPEATEDLY logging out of networks, turning Airport on and off, creating new network names, and so forth.
The worst results come from creating a familiar network with a name and password I've used before. The best results come from creating a brand new network, new name and pswd. And creating the using 128-bit WEP is the worst, but I think that sometimes that works, too.
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Don't know if this will help - but if you're using an Extreme base station go to the Airport Utility and look at the list of DHCP Clients. I had the same problem only I had an iMac and a Macbook running OS 10.4.11. Turns out that my printer and my iMac were sharing the same IP address. When I assigned a permanent address to the printer (out of the normal distribution range used for the other computers) the problems all went away. So, for instance, if the router was assigning IP addresses ending in 10.0.1.199, 198, 197, etc., and the primary computer ended witih 200, I named the printer 10.0.1.201
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I have read a nice solution for Applet2Applet communication when they are on different html pages (different frames or windows) at http://www.javaworld.com/javaworld/javatips/jw-javatip101.html.
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If the jar lists are not identical in each Applet, different classloaders are used:
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When changing settings for file/printer sharing on Windows it is always necessary to be patient. The whole workgroup browsing concept of windows requires some time to be up to date. I suggest you run the sharing wizard ones and follow the instructions there exactly.
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Another possible cause could be the firewall on the computer. Make sure to turn it off to see if it is the problem. Most software firewalls (except the windows firewall) react very sensitive when you just 'jump' to another network and tend to block all traffic by default.Message Edited by gv on 02-09-200701:58 PM

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This product has...
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About me...
Technology guru
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In reference to the issue that you are facing I would like to recommend you few things.
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http://www6.nohold.net/Cisco2/ukp.aspx?vw=1&docid=1f15297303cd4080b17d40fa3d4c1126_Connecting_a_USB_...

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Hi,
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Hi Russell,
It was clear enough.
I think I have already mentioned most of the things I have in my web pages on this http://www.ralphjohnsuk.dsl.pipex.com/page15.html#Greyed_OutBuddies
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http://www.ralphjohnsuk.dsl.pipex.com/page6.html
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I went home that night and done the same with AVG antivirus. Can't believe it was as simple as that.
configure your antivirus software like AVG or Norton to allow file and printer sharing as well as allowing your windows firewall to do the same.
Mine was in AVG firewall > settings (or Configure) > system > file and printer sharing......................just click on the dropdown box to allow.
As soon as I done this I went to my network places and the network files were visable.
other settings in there also solved my remote desktop problems.
Why couldn't I have thought of this 6 months ago.
PP

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Hi
File sharing is on and firewall is off. As I mentioned I have connection to the internet and can ping apple.com. It is not plugged into the WAN port on the AEBSn - the modem is plugged in there. The IP is assigned by DHCP
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Mac and iPhone don't see each other

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