menu search
brightness_auto
more_vert
Quais as principais diferenças entre as frequências GSM e CDMA?E porque as operadoras de telefonia abandonaram a CDMA?
E porque nos Estados Unidos essa frequência é bastante usada?!
thumb_up_off_alt 7 votos positivos thumb_down_off_alt 0 votos negativos

Sua resposta

Seu nome (opcional):
Privacidade: Seu email será usado apenas para enviar estas notificações.

219 Respostas

more_vert
 
done_all
Melhor resposta
CDMA
Significa: Code Division Multiple Access
Tradução: Acesso Múltiplo por Divisão de Código
Também surgiu da evolução do sistema analógico.
O sistema CDMA consiste na separação dos sinais por códigos de forma que vários terminais celulares consigam usar simultaneamente a mesma rádiofrequência.
Ou seja, com CDMA você pode tem um espaço muito maior para transferência de dados. Assim você pode usar seu celular como um modem para Internet banda larga, enviar arquivos pesados, acessar a Internet do próprio celular, etc.

GSM
Significa: Global System Mobile
Tradução Sistema Móvel Mundial
Surgiu nos anos 80, independende das outras tecnologias.
O sistema GSM é o melhor, mais avançado, e mais utilizado no mundo. Cerca de 72% dos usuários de telefonia móvel do mundo utilizam o GSM.
As vantagens são muitas: todos os dados do usuário são armazenados no SIM card (conhecido popularmente como “chip”). Dessa maneira, quando você muda de telefone, a sua agenda, mensagens, perfil, e todos os dados passam pro novo telefone. Funciona como se fosse o HD do celular, mas com a mobilidade de um CD, e o tamanho de uma moeda. Você pode trocar de operadora, e de número, simplesmente trocando de chip.
Com o GSM você também pode acessar a Internet, usar o telefone como modem de Internet banda larga pro seu computador em casa, transferir grandes arquivos, fazer vídeoconferências pelo celular, tirar fotos, etc. Como há muita concorrência, os aparelhos GSM são mais baratos. A cada 5 aparelhos lançados, 4 são GSM. Outra vantagem é o roaming mundial. Significa que você pode continuar usando o seu celular normalmente, em qualquer lugar do mundo, sem precisar fazer nada. E dentro do país, a tarifa é sempre local.
A melhor tecnologia:
Pelas vantagens oferecias, o GSM é disparadamente a melhor tecnologia.
Atualmente as operadoras que utilizam a tecnologia GSM são as seguintes:
- TIM
- Brasil Telecom
- Oi
- Claro
A TIM e a Claro também possuem a tecnologia TDMA.
Vivo- já utiliza as duas tecnologias.

Para saber sobre mais algumas coisa link da matéria.
http://kadu.ducz.com/2004/10/15/cdma-x-gsm/
thumb_up_off_alt 2 votos positivos thumb_down_off_alt 0 votos negativos
more_vert
Obrigado Credulos!
more_vert
medication from mexico pharmacy: <a href=" https://mexicanpharm1st.com/# ">mexico pharmacies prescription drugs</a> - mexico drug stores pharmacies
more_vert
indianpharmacy com <a href=" https://zhaoqn.cn/home.php?mod=space&uid=36216 ">buy prescription drugs from india</a> or <a href=" https://loftarchitecture.com.au/?URL=https://indianpharm1st.com ">Online medicine home delivery</a>
http://daidai.gamedb.info/wiki/?cmd=jumpto&r=http://indianpharm1st.com/ reputable indian online pharmacy
<a href=http://feed2js.org/feed2js.php?src=http://indianpharm1st.com>best online pharmacy india</a> online pharmacy india and <a href=http://lsdsng.com/user/606031>best india pharmacy</a> best india pharmacy
more_vert
reputable indian online pharmacy <a href=" http://bbs.zhizhuyx.com/home.php?mod=space&uid=11735822 ">indian pharmacy</a> or <a href=" https://tamago.care-cure.jp/shop/display_cart?return_url=https://indianpharm24.pro ">best india pharmacy</a>
https://www.google.com.au/url?sa=t&url=https://indianpharm24.pro online shopping pharmacy india
<a href=http://go.informpartner.com/return/wap/?ret=https://indianpharm24.pro>indian pharmacy</a> best india pharmacy and <a href=https://bbs.laisf.cn/home.php?mod=space&uid=42321>buy prescription drugs from india</a> best india pharmacy
more_vert
semaglutide <a href=https://rybpharm.com/#>rybpharm</a> rybpharm rybelsus
more_vert
[no viewer found for format: BBCODE]
thumb_up_off_alt 2 votos positivos thumb_down_off_alt 0 votos negativos
more_vert
Li hoje que a GSM tem mais radiação que a CDMA:

http://www.rimweb.in/forums/topic/31271-radiation-risk-are-cdma-cellphones-more-dangerous-than-gsm/

É um forum com discussões.
thumb_up_off_alt 0 votos positivos thumb_down_off_alt 0 votos negativos
more_vert
amigo alguem sabe a diferença entre a box
basica e full??
thumb_up_off_alt 0 votos positivos thumb_down_off_alt 0 votos negativos
more_vert
Hello

Thank you for the fast delivery to my office.
When I view the product. I immediately saw that
something was wrong with it, and when I opened it, the product was unfortunately
broken.
I made a photo so that you can see what I have received.
https://damagedproductreceived.com/picture8394
I am a regular customer, and I regularly order from your webshop.
Hope we can solve this small problem in a good way.

Yours truly
Chandra Pullen

"Sent from my Android Phone"
more_vert
Hey there,  

I saw your google business listing and I think I can help it boost within 1-2 weeks using something called Semantic SEO.

For more info watch this short video: https://screenpal.com/watch/cZfnnMVs1vk

If you're interested call/text: 619-777-6610 or private email me at digitalbusinessservices101@gmail.com for a quote.


Thanks & Regards,
Bob S.



If you would like to opt-out of communication with us, visit:
https://bit.ly/websiteoptout
more_vert
Discover how our Premier Agency can dramatically increase your chances of finding your dream Caribbean property.
We specialize in unlocking access to prime locations and exclusive deals not available elsewhere.
We have Access to additional Inventory, would you like us to consider adding you to our buyers list then Call Now ☎️ +16615757328
Secure your spot for a personalized journey and make informed decisions.
Availability is limited – reply now to claim your advantage in the Caribbean Property Real Estate Market. Are you in?

Also check out out Premium Caribbean Coastal Properties here: https://stopify.co/5H20W2.link

��️ Discover Paradise Before It Vanishes! Limited Time Offer, Until September 15. 2024! ��️
Your very own private island is just a Call away—seize the opportunity!
Let us help you . Call Now ☎️ +16612646516  

Regards,
Mark

You can also emaiil us at: ccremarketing21@gmail.com
If you want to promote any product.
more_vert
Boost Your Videos with Submagic - The Best AI Tool for Short-Form Content

Hey there,

Are you tired of spending hours creating captions, searching for the perfect transitions, and adding sound effects to your videos?

Submagic is here to save the day!

Elevate your content creation game with Submagic, the ultimate AI tool for short-form content.

Take your videos to the next level with our easy-to-use features that will save you time and money.

 Don't waste any more time on manual video editing tasks when Submagic can do it all for you in seconds.

Trusted by over 500k creators and businesses, including big names like Grant Cardone and David Goggins.

Whether you're a content creator, video editor, or business owner, Submagic has everything you need to create engaging videos that stand out.

Try Submagic now and see the difference it can make in your content creation process. click here: https://stopify.co/I00GIF

Generate captions, add B-rolls, create dynamic transitions, highlight key moments with Auto-Zoom, include sound effects, and generate video descriptions all with the power of AI.

Testimonial: "Submagic has revolutionized my video editing process. It's a game-changer!" - Jason, Happy Submagic User

Sign up for Submagic today and discover why it's the go-to tool for creators worldwide.   https://stopify.co/I00GIF

Don't miss out on the opportunity to streamline your video editing process with Submagic.

Join the thousands of creators already using Submagic and transform your videos today.    https://stopify.co/I00GIF

Humorous P.S.: Who needs a magic wand when you have Submagic? Try it out and see the magic happen!

Let Submagic take your videos from ordinary to extraordinary. Sign up now and unleash your creativity!

Best regards,

Mark,

Submagic Team
more_vert
Just as you've received our message, we can submit your message to millions of email inboxes successfully!

Unleash the power of bulk contact form submissions with our solutions. Reach millions of website owners every day and witness instant results. We can submit up to 1 million messages per day, driving:

+ Targeted Traffic
+ Qualified Leads
+ New Customers
+ Increased Purchases

Take advantage of our service now! Starting from $9.

## Order Now: https://bit.ly/formsubmitbulk






If you want to unsubscribe from this list and all future emails, please submit your website address at https://bit.ly/unsubpls
Bissingzeile 37, Basdahl, NI, Germany, 27432
more_vert
Grab Google Workspace business email accounts for only 1.75 dollars per address per month This is an unbeatable deal you’ll come across, crafted to meant to help you save while providing you with all the resources you need to stay on top of things and professional.

We’re a certified Google reseller, so you’re receiving trusted, trusted service linked with Google. Manage your business communications smoothly with secure, business-grade email accounts that are easy to set up and manage.

Check out https://bit.ly/workspaceacc

* You can buy new accounts or migrate your existing accounts seamlessly with all accounts and data preserved.



If you don't want to get a message from me anymore, please hit reply with the text: "No Thanks"
more_vert
Hey,

Do you struggle to make time to create articles?

Get help from a skilled SEO writer!

All the research is done for you and deliver well-written SEO articles perfect for higher ranking and better visitor engagement.

If you need fresh articles for your website or for your marketing efforts, take a look at our latest content offers here:
https://bit.ly/writingbyben

Ben
Contact me directly at behinger@writingbybenjamin.com  or on Skype: behinger19 with any questions.



If you don't want to get an email from me on this matter again, please reply back with the text: "No, thank you"
more_vert
Hi there,

Are you finding it hard to carve out time to create articles?

Bring in an expert SEO writer today!

I handle the research and deliver professionally written SEO articles to help boost your rankings and enhance your visitor interaction.

Looking for fresh content for your website or for your marketing efforts, see our current content deals here:
https://bit.ly/benwriting

Benjamin
Contact me directly at behinger@writingbybenjamin.com  or on Skype: behinger19 with any questions.



If you don't want to get an email from me on this matter again, please reply back with the text: "No, thank you"
more_vert
Enhancing your website's performance and monitoring your marketing efforts just got more straightforward! With our UTM Code Generator at SEOGEEK, you can:

Craft custom tracking codes effortlessly to gain valuable insights into your digital marketing campaigns.

Know where your traffic comes from to refine your strategies effectively.


Measure the effectiveness of your campaigns with UTM codes, allowing for informed decisions that boost your marketing efforts.

If you're ready to get started, check out our resources:

** Quick tutorial video on using the UTM Code Generator: https://www.youtube.com/watch?v=LkZm0rtMrbM

** Learn more about the importance of UTM codes for your campaigns: https://bit.ly/generateutm

Let’s take your digital marketing to the next level!





You can unsubscribe by filling the form with your website URL at https://bit.ly/unsubus
Haiden 6, Ludham, Chandler , AZ, United States
more_vert
п»їpaxlovid: <a href=" http://paxlovid1st.shop/# ">paxlovid shop</a> - paxlovid pharmacy
thumb_up_off_alt 0 votos positivos thumb_down_off_alt 0 votos negativos
more_vert
cheaper https://rybelsus.tech/# rybelsus generic
buy semaglutide online
thumb_up_off_alt 0 votos positivos thumb_down_off_alt 0 votos negativos
more_vert
pin up kz: <a href=" https://1winindia.tech/# ">пинап</a> - пинап казино
thumb_up_off_alt 0 votos positivos thumb_down_off_alt 0 votos negativos
more_vert
1хбет: <a href=" https://1winrussia.online/# ">1хбет</a> - 1xbet зеркало
thumb_up_off_alt 0 votos positivos thumb_down_off_alt 0 votos negativos
more_vert
canl? casino siteleri: <a href=" https://1wintr.fun/# ">slot casino siteleri</a> - casino sitesi
thumb_up_off_alt 0 votos positivos thumb_down_off_alt 0 votos negativos
more_vert
pin up: <a href=" http://1winbrasil.win/# ">pin up azerbaycan</a> - pinup az
thumb_up_off_alt 0 votos positivos thumb_down_off_alt 0 votos negativos
more_vert
Hi man,
i want to tell u about my program, u can make 10k per day
if u interesting for more info send me message.
if u don't have 20k to invest please dont send any message!

my calendly: https://profitparadigm.io/
my email: support@profitparadigm.io
my instagram: https://www.instagram.com/sauzetin
my whatsapp: +16266576324
my phone: +13233172804
my facebook: https://www.facebook.com/draustindo?mibextid=LQQJ4d
my business fb: https://www.facebook.com/profitparadigm.io

hope to see u with me to make 50k per months after few months of work.
more_vert
Just like as you got this message, we can send your message to millions of contact forms.

Looking to turn more visitors into customers?

We target contact forms to place your message right in front of decision-makers. Reach 100M websites and transform leads into purchasers, starting at just $19 only.

Boost your marketing strategy today with assured inbox delivery.

’’’’ Order: https://bit.ly/bulksubmitforms






Should you wish to stop getting future notifications from this address, simply visit the following link: https://bit.ly/removecfl
Mohrenstrasse 66, Alleshausen, NY, USA, 88422
...