3G with static IP

Dongles - not 100% sure, you'll be behind a NAT so it might change if you power down.
M2M - Static IP is an option if you're using an M2M service but this will be carrier grade etc... so a different proposition/cost.
 
As said, usually you'll sit on a NAT'd network. However there are a few providers (iirc Andrews & Arnold offer it) that offer '3G Fixed IP' (do a Google on it and you'll get plenty of results) data sims, although expect to pay a premium for it.
Although depending on what you're attempting to achieve, there may be other cheaper solutions.

edit - Have a look at - http://www.3grouterstore.co.uk/3G/Fixed_IP_SIM.html and http://blog.martinshouse.com/2011/06/uk-sim-cards-with-static-ip-addresses.html
 
I'm thinking of just getting a MiFi router/modem and just keeping it on all the time so the IP stays constant. I assume that would work?
 
Spamalot said:
I'm thinking of just getting a MiFi router/modem and just keeping it on all the time so the IP stays constant. I assume that would work?
Click to expand...

Is it outgoing or incoming connections you want the static IP address for? As mentioned before you'll have a NAT'd address so you won't be able to use it for incoming stuff.
 
Spamalot said:
I'm thinking of just getting a MiFi router/modem and just keeping it on all the time so the IP stays constant. I assume that would work?
Click to expand...

Chances are load-balancing is employed so you couldn't guarantee that once connected you'd retain the same public facing address for the entire connection length.
Although i can't say i've personally noticed the public address changing during a 3G connection but then again i haven't gone looking for it. So it might be a case of 'suck it and see'.

However for security, i'd be tunnelling over the 3G connection back to 'base' but i guess it depends on what you're attempting to do.
 
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