What are AT&T's 4G LTE bands?

I am considering buying a new phone that supports FDD-LTE 1800/2100/2600MHz and TD-LTE B38/39/40/41. Could it work on AT&T LTE network
[Subject edited for better exposure]

Thanks GLIMMERMAN76 for your reply. When I looked at the specs again, I missed some vital information. Here is the correct specs: NETWORK LTE Band 13/4 (700/1700 MHz), CDMA/1xEVDO Rev. A (800/1900 MHz) GLOBAL NETWORK EDGE/GSM (850/900/1800/1900 MHz), HSPA/UMTS(850/900/1900/2100 MHz) Now, if I port my phone/number to AT&T, Would it work fine with all features? I am asking this questions as now all the new phones come with inbuilt GSM.

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What are the frequencies all versions of the iPhone 6 and what are they used for (e.g. GSM, 3G, LTE, WIFI, Bluetooth,etc...) provided with channel numbers per frequency

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Garage Band for ISO vs. Mac Air - what are the differences?

My husband and I are trying to decide whether to purchase an Ipad 2 or a Mac Air for our daughter who wants Garage Band. She's a fairly good pianist and likes to compose. Money is an issue - so we are wondering if Garage Band on the IPAD 2 has the same functionality as on a MAC Book Air.

Though they share the same name and general screen appearance, there are differences in functionality and connectivity.
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All iPhone 5 have both an A Model number and a MD Model number. The MD Model number is found in Settings App > General > About > Model.
Here are some examples:
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Apple iPhone 5 16GB White AT&T MD635LL/A
Apple iPhone 5 16GB Black AT&T MD634LL/A
Apple iPhone 5 32GB White AT&T MD637LL/A
Apple iPhone 5 32GB Black AT&T MD636LL/A
Apple iPhone 5 64GB White AT&T MD645LL/A
Apple iPhone 5 64GB Black AT&T MD644LL/A
Apple iPhone 5 16GB White Verizon MD655LL/A
Apple iPhone 5 16GB Black Verizon MD654LL/A
Apple iPhone 5 32GB White Verizon MD659LL/A
Apple iPhone 5 32GB Black Verizon MD658LL/A
Apple iPhone 5 64GB White Verizon MD665LL/A
Apple iPhone 5 64GB Black Verizon MD664LL/A
Apple iPhone 5 16GB White Sprint MD657LL/A
Apple iPhone 5 16GB Black Sprint MD656LL/A
Apple iPhone 5 32GB White Sprint MD661LL/A
Apple iPhone 5 32GB Black Sprint MD660LL/A
Apple iPhone 5 64GB White Sprint MD668LL/A
Apple iPhone 5 64GB Black Sprint MD667LL/A
Apple iPhone 5 16GB White GSM Officially Unlocked MD294LL/A
Apple iPhone 5 16GB Black GSM Officially Unlocked MD293LL/A
Apple iPhone 5 32GB White GSM Officially Unlocked MD296LL/A
Apple iPhone 5 32GB Black GSM Officially Unlocked MD295LL/A
Apple iPhone 5 64GB White GSM Officially Unlocked MD643LL/A
Apple iPhone 5 64GB Black GSM Officially Unlocked MD642LL/A
CANADA
iPhone 5 16GB Black & Slate (GSM) Unlocked MD293C/A
iPhone 5 32GB Black & Slate (GSM) Unlocked MD295C/A
iPhone 5 64GB Black & Slate (GSM) Unlocked MD642C/A
iPhone 5 16GB White & Silver (GSM) Unlocked MD294C/A
iPhone 5 32GB White & Silver (GSM) Unlocked MD296C/A
iPhone 5 64GB White & Silver (GSM) Unlocked MD643C/A
ITALY iPhone 5 16GB Nero e ardesia (GSM) Senza scheda MD297IP/A
ITALY iPhone 5 32GB Nero e ardesia (GSM) Senza scheda MD299IP/A
ITALY iPhone 5 64GB Nero e ardesia (GSM) Senza scheda MD662IP/A
ITALY iPhone 5 16GB Bianco e argento (GSM) Senza scheda MD298IP/A
ITALY iPhone 5 32GB Bianco e argento (GSM) Senza scheda MD300IP/A
ITALY iPhone 5 64GB Bianco e argento (GSM) Senza scheda MD663IP/A
New Zealand iPhone 5 16GB Black & Slate (GSM) Unlocked MD297X/A
New Zealand iPhone 5 32GB Black & Slate (GSM) Unlocked MD299X/A
New Zealand iPhone 5 64GB Black & Slate (GSM) Unlocked MD662X/A
New Zealand iPhone 5 16GB White & Silver (GSM) Unlocked MD298X/A
New Zealand iPhone 5 32GB White & Silver (GSM) Unlocked MD300X/A
New Zealand iPhone 5 64GB White & Silver (GSM) Unlocked MD663X/A
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Hello everyone,
What are the security implications of not completely signing the database?
From http://www.archlinux.org/pacman/ ,
The following quote implies that the database exists merely just in case hand tweaking is necessary:
maintains a text-based package database (more of a hierarchy), just in case some hand tweaking is necessary.
However, considering that there are cases that pacman's local database needs to be restored, there are implications that the database is essential for pacman to function properly.
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I know that all official packages (from core, extra, community, etc.) are signed so that all files should be safe, but I'm just paranoid.
What if the database was hacked? Will this lead to installation of harmful software?
Sincerely,
Cylinder57
Last edited by Cylinder57 (2012-10-15 03:42:31)

Cylinder57 wrote:
From this quote:
Allan wrote:But, the OP (also?) talks about the local package database on his computer. That is not signed at all as there is no point. If someone can modify that, then they can regenerate the signature, or just modify any other piece of software on your computer.
Is it going to be easy for anyone other than the authorized user to modify the local package database?
Allan basically answered that with the quote above already as I understand it. Someone who has access to the installation, e.g. is able chrooting your PC via USB, is not held back by any ACLs. However, modifying the local database only makes limited sense because the packages are already installed. Pacman would only recheck, if you re-install a package. The only really relevant attack vector for the package database is
(1) installing an older package with a vulnerability,
(2) re-placing the up-to-date package sig in the local database with the older one and
(3) modifying the system, e.g. via pacman.conf excludes, to not update that.
then also re-installing would not create a sig-error and you get stuck with the bogus old package.
With a signed database this would not be possible. However, as Allan wrote earlier also with a signed database that criminal can manually install (totally leaving pacman & package cache) whatever it needs in this scenario. So, if you are -really- paranoid about that, you probably want to spend (a lot of configuring) time with something like the "aide" package.
Cylinder57 wrote:
And, are the following statements correct:
If the repository databases are modified, the hacker might be able to modify the packages on the server (Considering that if someone can modify the local package database, that person can modify any other piece of software on that particular computer.)
However, pacman won't let users from installing the modified packages (due to package signing,) unless at one person with access is bribed (at least, for an individual package.)
I don't know the intricacies of the server infrastructure - only saw they have great names :-), but I am pretty certain your statements assume that correctly. It is pretty unlikely that someone able to modify the central repository database fails at placing a bogus package for shipping with those access rights at this time. Yet it does no harm not to post any details of such a scenario here imo. In any case: A compromised mirror would be enough for that - and easier to achieve (hacked anywhere or e.g. in a non-democratic state). Plus you also answered it yourself. The keys are key for our safety there. Which keeps me hoping that no criminal lawnmover salesmen frequent the Brisbane area.
As you put up a thread about this, one question you can ask yourself is:
Have you always checked on updates new signatures keys which pacman asks about? If you ever pressed "accept/enter" without checking them out-of-band (e.g. the webserver), that compromised mirror database might have just created a "legitimate" key .. user error, but another attack vector the database signing would catch.
edit: Re-thinking the last paragraph just after posting, I now believe it would not be that easy as implied - simply because the bogus key is not trusted by one of the master keys. The pacman pgp trust model should catch that without database signing. At least it would if only the official repositories are activated, but that's a pre-requisite to the whole thread.
Last edited by Strike0 (2012-10-20 23:01:26)

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2.4 or 5GHz? What are the differences?

Hi, guys.
Yesterday I got a Time Capsule from my wife as my 30th birthday gift. So, it's my first 802.11n router and I have a few doubts.
I'll be the only one wirelessly connecting to it from my Aluminum MacBook, so, what are the advantages of setting TC up for 5GHz only?
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What are the Application avaliable in Apple Iphone 4s? i wanna that application details?, what are the Application avaliable in Apple Iphone 4s? i wanna that application details?

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