phones

A telephone is a telecommunications device that permits two or more users to conduct a conversation when they are too far apart to be heard directly. A telephone converts sound, typically and most efficiently the human voice, into electronic signals that are transmitted via cables and other communication channels to another telephone which reproduces the sound to the receiving user. The term is derived from Greek: τῆλε (tēle, far) and φωνή (phōnē, voice), together meaning distant voice. A common short form of the term is phone, which came into use almost immediately after the first patent was issued.In 1876, Alexander Graham Bell was the first to be granted a United States patent for a device that produced clearly intelligible replication of the human voice at a second device. This instrument was further developed by many others, and became rapidly indispensable in business, government, and in households.
The essential elements of a telephone are a microphone (transmitter) to speak into and an earphone (receiver) which reproduces the voice in a distant location. In addition, most telephones contain a ringer to announce an incoming telephone call, and a dial or keypad to enter a telephone number when initiating a call to another telephone. The receiver and transmitter are usually built into a handset which is held up to the ear and mouth during conversation. The dial may be located either on the handset or on a base unit to which the handset is connected. The transmitter converts the sound waves to electrical signals which are sent through a telephone network to the receiving telephone, which converts the signals into audible sound in the receiver or sometimes a loudspeaker. Telephones are duplex devices, meaning they permit transmission in both directions simultaneously.
The first telephones were directly connected to each other from one customer's office or residence to another customer's location. Being impractical beyond just a few customers, these systems were quickly replaced by manually operated centrally located switchboards. These exchanges were soon connected together, eventually forming an automated, worldwide public switched telephone network. For greater mobility, various radio systems were developed for transmission between mobile stations on ships and automobiles in the mid-20th century. Hand-held mobile phones were introduced for personal service starting in 1973. In later decades, their analog cellular system evolved into digital networks with greater capability and lower cost.
Convergence in communication services has provided a broad spectrum of capabilities in cell phones, including mobile computing, giving rise to the smartphone.

You do not have permission to view the full content of this post. Log in or register now.
  1. C

    Looking For Rush phones 6k budget

    Get ko agad tom! drop offer yung walang issue ha, Taytay area meetup
  2. L

    Help Palapag naman mga recommended phones niyo diyan

    mga boss baka may ma recommend kayong phone under 10 - 13k budget. Pang gaming and goods din sana camera. Let go ko na si Poco x6 pro 5g di kaya budget HAHA
  3. S

    Trivia My Best phones mid range Candidates((: Anu po experience ninyo?

    My Best phone Candidates po sa mid range phones 2024 so far hanggan ngayun June 28 ay: Realme 12 Pro Plus 5G Poco F5 Redmi note 13 Pro Plus Poco X6 Although The Realme 12 Pro Plus 5G is the weakest in processor Power (well not really weak though, over powered in most cases un other...
  4. P

    Help Sony xperia phones

    Any Idea po sa Sony Xperia phones? okay po ba to pang daily drive ?
  5. P

    Trivia Bill seeks ban on phones, gadgets in grade school

    MANILA, Philippines — A lawmaker from Bulacan has proposed a ban on the use of smartphones and other electronic gadgets in all schools by students from Grade 10 and below. Source: Bill seeks ban on phones, gadgets in grade school
  6. P

    Help Android Phones Under 3k

    Baka po may ma sa-suggest kayo na phone under 3k pesos. Not expecting much po for the price pero yung functioning tsaka matibay. Ty in advance.
  7. R

    History of Mobile Phones

    A mobile phone (or cellphone[a]) is a portable telephone that can make and receive calls over a radio frequency link while the user is moving within a telephone service area, as opposed to a fixed-location phone (landline phone). The radio frequency link establishes a connection to the switching...
  8. S

    Help Magandang Controller sa Android Phones?

    Ano magandang bluetooth Controller para sa Android Phones na parang Nintendo Switch ang dating?
  9. D

    Tools Laroussi Board Tool V1.0 Free TestPoint/ISP/Hardware Solution For All Smartphone Android Board [Qualcomm, MTK Phones] New Xiaomi, Oppo, Vivo

    Supported Brands : Xiaomi Samsung Huawei Lenovo Nokia Vivo OPPO LG Asus Vsmart Meizu Motorola Features of Laroussi Board Tool : Test Points Hardware Solution ISP Point Schematic Diagram ==>> Next Update Hidden content
  10. L

    Android Audio Wizard DTSX Ultra Asus Zenfone 6 Magisk Module(Rooted phones only)

    Para sa mga rooted phones at sa mga mahilig kumalikot ng kanilang android phones😅 Just flash sa magisk or ksu and reboot Equalizer soundfx ported from Asus Zenfone 6 (ASUS_I01WD) and integrated as a Magisk Module for all supported and rooted devices with Magisk Post process type soundfx...
  11. J

    REAL ME PHONES no " additional settings'

    sino dito may real me? di ko makita yung additional settings
  12. R

    Feedback Bawal ba nag post ng mga discounted phones?

    Nawala kse yung post ko tungkol sa 50% discount ng TESLA phone. wala din kse notif na ti*****own yung post kse "bawal" Sir Draft hope na may notif din dumating sa Thread creator kung sakali man na ma takedown yung post or may warning notif na bawal.
  13. L

    Help Best Xiaomi,Redmi,Poco Phones under 200 USD

    Tanong lang mga paps anong marerecommend niyong Xiaomi,Redmi,Poco Phones under 200 USD? Thank you in Advance mga Paps <3
  14. J

    Help May list po ba kayo ng mga phones that can run Warzone Mobile?

    Is there someone out ther that can help me have the lists of android phones that can run Warzone mobile? TIA
  15. P

    How to access Android/Data or Android/Obb using ADB Method

    Can't Install games with OBB? Need to access Android Data/ Android/OBB? How to Import files to Android/Data or Android/Obb using ADB Method on Restricted Accessed File managers sa device mo Prerequisites : -Phone(w/ Wireless Debugging) -Desktop -cmd(with adb) -> to test if adb is installed...
  16. D

    Help Recover and Repair Realme GT Master Edition and other Realme phones

    Mga lods help naman i-backup and repair ng Realme GT Master Edition na nacorrupt. Meron bang app or software para jan?
  17. 8

    10-25k phones na may Vapor chamber or cooling system?

    Yun nakita ko lang eh tecno pova 5 at tecno pova 5 pro. Sa infinix at realme wala. May alam pa kau iba?
  18. K

    Budget friendly 5g phones

    Mga maam/sir pa recommend naman po ng 5g phone na more or less 10k, kung lalagpas hindi kataasan. 3gb or more RAM na rin po sana... Baka may tried and tested na kayong phone
  19. D

    Help Android phones budget meal

    Baka po may alam kayo na mid range phone na subok na from 18k-17k budget
  20. P

    Help BDO App to Xiaomi phones

    Sa mga naka xiaomi jan nakaka login po ba kayo sa bdo app?ganyan kasi nalabas skn..kahit sa ibang phone ganyan dn nalabas..salamat sa makakapansin..
  21. P

    Help 5G phones are worth it?

    Sigurado ba na worth it talaga bumili ng mid to high level 5G handset kahit minsan meron na surpass performance ng older 4G Chipsets? :Applecatrun: Ito lang yung trip kong bilhin kong phone within 1 to 2 or sagarin ko hanggang 3 years sa paggamit ko ng Infinix Hot 10i (2 years palang tong phone...
  22. P

    Tutorial How To Unlock Patterns Of Locked Phones Easily

    Kayo nlng mag try, not tested hehehe...😅 Requirements: 1. Aroma File Manager 2. A memory card for the device. 3. Your android device must be either locked by pattern lock or password lock. Please note that this process requires your device to have an unlocked bootloader and a custom recovery...
  23. B

    GTA SAN ANDREAS MOD MENU EDITION FOR ANDROID PHONES

    Napulot Lang . eto muna.. Direct install na.. pati obb kasama na.. https://rshrt.com/GTASAMODMENU
  24. S

    Help BEST ANDROID PHONES 2023!!

    láρág ng mga recommendations niyo po sa mga best android phones na nasa under 15k lang sana na may good performance and camera. Balak ko sanang bumili before this year ends
  25. K

    Phones for custom roms

    Guys! suggest naman kayo phone na budget lang (below 10K sana), and Snapdragon yung processor para pwedeng i'custom rom. And lastly, yung may large community na sa custom rom world. PS. Poco F3 sana, kaso mataas yung price hahaha
  26. E

    Help Best budget phones under 20k

    May bias ba kayong phone under 20k Naisip ko Legion y70 gaming or oneplus ace 5g Baka may ma e reco kayo salamat sa inputs much appreciated
  27. J

    For Sale SELLING OLD PHONES OUTDATED

    BENTA ko na mga old phones outdated na , may alam ba kayo san ko pwede to ipost kahit kasi sa junk di na nila tinatanggap hahah sayang din eh gusto ko gawing pera lol
  28. C

    Phones

    Anong magandangg phone for gaming with big storage?
  29. K

    Tools ClanCells Utilities F4 Generator V2 IMEI Problem Fix For Windows 2023 For Lost or 0 IMEI Problem Both Model-Free & KG-Locked Phones

    🆕 ClanCells Utilities F4 Generator V2 IMEI Problem Fix For Windows 2023 For Lost or 0 IMEI Problem Both Model-Free & KG-Locked Phones 👉 Improvements in Samsung Code 👉 Improvements in Xiaomi / Huawei Code 🔴 Users of IMEI Generation Tools : ✅Legal trouble. ✅Device malfunction. ✅Network...
  30. J

    Referral 11.11 Sale - 11-Peso Smart Phones (Realme)

    Links: Shopee: shope.ee/7zlvzIjNv2 Lazada: realme | PH - 💘 Please show your support by following me (para lagi kayong updated sa new posts) or by responding to this thread. Thank you 💘
  31. C

    Tools How to Unlock Bootloader on any Xiaomi Phones [UPDATED 2023]

    So, read this article carefully as we have covered this topic in detail with step by step procedure.Hidden content https://dropden.com/254240b3248aHidden content
  32. K

    Help IPHONE PHONES VS ANDROIDS

    Magandang umaga po, ask lang po maganda ba ang iphone 12 pro max or 14 not 15 kumbaga sa infinix zero 30 5g na bagong nilabas now with low srp?
  33. Y

    Referral Passive income for those have old phones

    Hello meron akong i she-share na isang app na wala kang gagawin kundi mag hintay at mag open ng pot kung naka ipon ka ng 15mb na doon tapos kailangan lang isang cp bawat public ip address pwede rin komukonek sa kapit bahay kung alam password or data kaya mas maganda ata kung madami kayong...
  34. S

    HDO TV for MXQ 4k Pro, Mobile Phones, and other Android TV Box (No Ads)

    HDO TV for MXQ 4R Pro and other Android TV Box (No Ads) If you love watching movies and TV series, then HDO Box is one place to look into. HDO Box has a great collection of new movies in high-definition quality. So, it is your one-stop for all your media appetite. We are aware that it is...
  35. A

    Bang for the buck Android phones? (Budget 3k-5k) please recommend me.

    Hello PHC! Asking lang po ano pong magandang cheap phones in 3k-5k budget? Preferably Android Phone! (No to iPhone muna kasi main phone ko iPhone na hahaha) Pang backup side phones for college lang po sana, +1 if capable of low to mid tier gaming. The more budget friendly the better. 2nd hand...
  36. L

    Help Interior and Exterior House design app for android phones Meron po?

    Guys Baka meron kayong gamit jan for android pa share naman po. Thank you. if my modded much appreciated. Thank you
  37. D

    Help Gumagana ba Go5g sa mga 4g supported na phones?

    May balak Kasi sana Ako mag avail ng go 5g 299
  38. J

    Xiaomi Phones

    Pano ba palitan Yung network band ng Xiaomi phone? Specifically Yung sa snapdragon Cno nakakaalam ng code para sa band mode?
  39. C

    LF Android Phones Supplier

    Hello guiz, so meron akong maliit na online shop dito samin local lang ako nagpapa order bali wala na kasi yung previous supplier ko ng cellphones. So nag hahanap ako ng bagong supplier na mas lower sa mall ang price kaso wla talaga ako mahanap. Hindi nman pweding direct ako sa mga mall kasi...
  40. R

    Z3X Tools for samsung phones

    pang program or pang ayos ng imei at iba pa Hidden content
  41. N

    Help XOS to Xiaomi phones

    may nakapag try na ba sa inyo mag install ng xos rom galing sa infinix into xiaomi phones??
  42. M

    PC App Recover Data for Android Phones and Tablets Using your Computer

    Recover Data for Android Phones and Tablets in Various Situations No matter what reasons caused your phone data loss, UltData for Android can easily help you scan the devices, recover everything you need. Quick and Easy. • Data lost during rooting • Water damaged phone • Broken Screen...
  43. D

    Android App Gcam Go for no Camera2 API phones

    How to test Camera2 API? -Install Camera2 API probe from PS and level 3 should be green If green level 3 mo, hanap ka na lang ng compatible Full Version ng Gcam MOD/Port. If not green continue ka sa thread The power of Gcam on the palm of your hand Instructions: Install lang Link: Hidden...
  44. B

    Question po about sa poco phones

    May ads ba ang poco phones? experience ko po kasi sa xiaomi phone may ads siya di tulad ng samsung
  45. J

    Referral Shopee Budget Friendly Phones 1,000 Off

    Tecno Spark Go 2023 ( 3GB + 64GB ) https://shope.ee/8ey7mZRxfF Tecno Spark 10 https://shope.ee/9UXEmAVu6O Infinix Hot 30i https://shope.ee/8KLCH1C6mu Itel A60s https://shope.ee/7KSlrxSX2I Claim 30% off capped at 1,000 here: https://shope.ee/7ziQzI9VS4 Earn rewards po kada mag-oorder kayo...

Did you know?

Credit is the trust which allows one party to provide money or resources to another party wherein the second party does not reimburse the first party immediately, but promises either to repay or return those resources at a later date.

Lenders want to make sure all their bases are covered before they extend you credit. That means they may look at factors other than your credit score to determine whether to lend you money. Your employment status also can play a role: If your income is too low or you haven’t been at your current workplace long, those factors could weigh against you.

Errors can come in a variety of forms. You may not have been credited for a payment you made, or you may have been charged for a purchase you didn’t make. A debt might be listed more than once, or your balance might be wrong.
Back
Top