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Dual SIM

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or default for making calls, and one (which could be the same one) for data. Apple phones supporting dual SIMs can be set up to automatically use a specific SIM for each contact or the same one used for the last call to the contact, for iMessage, and for FaceTime. Typically when dialling or sending a
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Dual SIM phones allow separate numbers for personal and business calls on the same handset. Access to multiple networks is useful for people living in places where a single network's coverage may prove inadequate or unreliable. They are also useful in places where lower prices apply to calls between
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Dual SIM phones are mainstream in many countries where phones are normally sold unlocked. Dual SIMs are popular for separating personal and business calls, in locations where lower prices apply to calls between clients of the same provider, where a single network may lack comprehensive coverage, and
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Dual SIM phones have been rare in countries where phones have been usually sold on contract, as the carriers selling those phones prevent SIMs from competing carriers from being used with the phones. However, dual SIMs have been popular in locations where people normally buy phones directly from
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trademarks such as those of Nokia or Samsung, either as cosmetically-identical clones of the originals, or in completely different designs, with the logo of a notable manufacturer present in order to take advantage of brand recognition or brand image.
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Dual SIM phones have become popular especially with business users due to reduced costs by being able to use two different networks, with one possibly for personal use or based on signal strength or cost, without requiring several phones.
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Some devices accept dual SIMs of different form factors. The Xiaomi Redmi Note 4 has a hybrid dual SIM tray that accepts one micro SIM card and one nano SIM card, the latter of which can be swapped for a MicroSD card.
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for travel across national and regional borders. In countries where dual SIM phones are the norm, people who require only one SIM leave the second SIM slot empty. Dual SIM phones usually have two unique
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Dual SIM phones allow users to keep separate contact lists on each SIM, and allow easier roaming by being able to access a foreign network while keeping the existing local card.
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Devices that use more than two SIM cards have also been developed and released, notably the LG A290 triple SIM phone, and even handsets that support four SIMs, such as the
254:(DSDA) phones have two transceivers, and can receive calls on both SIM cards, at the cost of increased battery consumption and more complex hardware. One example is the 464: 222:. When one SIM is in active use, for example on a call, the modem locks to it, leaving the other SIM unavailable. Older examples of dual-SIM standby phones include the 644: 774: 172:
For originating communications via the mobile phone network, the way to choose which SIM is used may vary on different phones. For example, one can be selected as
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interfaces and other modern features, typically retail for a much lower price than branded models. While some such phones are sold under generic names or are
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Prior to the introduction of dual SIM phones, adapters that fit in the SIM card slot and hold two SIMs, with provision to switch between them when required.
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When two SIM cards are used simultaneously, the primary SIM can support 4G+/ 4G / 3G / 2G calls and data while the secondary SIM can support 3G calls only.
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Such phones were initially eschewed by major manufacturers due to potential pressure from telecommunications companies, but from about 2010
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by smaller companies under their own brand, numerous manufacturers, especially in China, produce phones, including dual SIM models, under
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manufacturers. In such places there is little lock-in to carrier networks, and the costs of having two phone numbers are much lower.
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in 2000. More dual SIM phones were introduced in about 2007, most of them coming from small Chinese firms producing phones using
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services manually, have hardware support for keeping both connections in a "standby" state for automatic switching, or have two
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Mobile is also an example of rebadged Chinese Dual-SIM phones sold in few European countries as well as in North-West Africa.
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Vendors of foreign SIMs for travel often promote dual-SIM operation, with a home country and local SIM in the same handset.
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Some telephones have a primary and a secondary SIM slot that support different generations of connectivity. For example,
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and 5G, or 5G and 4G. Selecting either of the SIMs as primary is usually possible without physically swapping the SIMs.
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Some phone models utilize a "hybrid" SIM tray, which can hold either two SIM cards, or one SIM card and one
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operation. When a second SIM card is installed, the phone may allow users to switch between two separate
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containing two physical SIM slots, and models sold elsewhere supporting dual SIM by means of
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Some sub-contract Chinese companies supply inexpensive dual SIM handsets, mainly in
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The first phone to include dual SIM functionality was the Benefon Twin, released by
2203: 2148: 2014: 1980: 1890: 1825: 1697: 1626: 1480: 1463: 1227:"Rare breeds: Dual SIM phones with separate microSD card slot (no hybrid SIM tray)" 429: 145: 692: 2042: 2032: 2007: 1990: 1967: 1797: 1792: 1685: 379: 371: 266: 19: 2024: 1997: 1975: 1709: 363: 306: 255: 227: 137: 98: 60: 24: 35: 2334: 2138: 1787: 1751: 1702: 1690: 775:"Samsung Galaxy S Duos 2 vs Samsung Galaxy Core – Specs and Price Comparison" 387: 383: 141: 79: 2170: 2133: 2067: 1777: 1668: 1455: 1353:"Karbonn launches four budget Android dual-SIM smartphones under Rs. 7,500" 930: 506:"LG's first triple-SIM phone to be released next month - GSMArena.com news" 339: 48: 949:"Duo SIM D2 converts a standard mobile phone to dual SIM phone in minutes" 465:"The Dual Sim iPhone Is What Many In Asia And Europe Have Been Hoping For" 2158: 2123: 2072: 2047: 1609: 1549: 1129:"HTC Desire 600 Review - Interface, Functionality, Dual SIM and Internet" 439: 347: 310: 203: 125: 121: 117: 64: 2246: 2062: 2037: 1934: 1845: 1802: 1741: 1253:"Huawei's Nano Memory Cards are replacing microSD on its latest phones" 1055: 720:"Nokia unveils 3 new Android handsets: Nokia X, Nokia X+, and Nokia XL" 469: 391: 149: 1782: 1544: 1153: 535: 490: 239: 235: 231: 153: 2153: 1925: 1532: 1517: 1303: 531:"OTECH F1 the First Quad-SIM Mobile Phone Comes with 12.1MP Camera" 486:"New leaks suggest Apple's new iPhones will support dual SIM cards" 444: 95: 52: 28: 2052: 1830: 1507: 302: 275: 129: 109: 91: 1424: 2165: 1885: 907:"What you need to know about the iPhone's new dual-sim feature" 40: 359: 157: 105: 1202:"UMI Zero octa-core smartphone review - Review - PC Advisor" 1183:"Dual SIM 5G phones: What's the deal with 5G+5G technology?" 1527: 1357: 999:"Samsung GALAXY S DUOS unveiled with dual-SIM capabilities" 881:"Apple brings dual-SIM support to the iPhone XS and XS Max" 398: 335: 161: 72: 2238: 1663: 375: 309:
range introduced a proprietary memory card format called
1104:"What is Dual SIM Dual Standby and Dual SIM Dual Active" 1636: 1631: 1621: 1604: 1599: 1588: 1051:"Apple introduces the iPhone Xs and iPhone Xs Max news" 295: 291: 287: 283: 637:"Shanzhai ji: All you need to know about fake phones" 856:"Sony Xperia Tipo Dual specifications and reviews" 757:"Nokia C1 unleashed with double-SIM functionality" 558:"OTECH F1 quad-SIM cellphone is probably overkill" 338:countries. The phones, which also usually include 662:"Dual SIM review: Mobiles go two-in-one - page 2" 583:"Cherry Mobile Q70 Quad is first quad-SIM phone?" 313:, exactly the size and shape of a nano SIM card. 2332: 1380:"Could Americans Learn to Love Dual-SIM Phones?" 740:. Nokia Corporation. 3 June 2010. Archived from 605:"Benefon unveils handsets in grand media launch" 177:message an option to select a SIM is displayed. 101:. They started to attract mainstream attention. 1096: 218:phones allow both SIMs to be accessed by using 1318: 1043: 67:to maintain both network connections at once. 1440: 1148: 1146: 941: 1326:"Cherry Mobile's uber cheap dual SIM phones" 630: 628: 477: 116:and several others followed suit, with the 1447: 1433: 1269: 1250: 1193: 1143: 767: 687: 685: 683: 270:A dual SIM tray as shown on a counterfeit 1219: 1121: 797: 625: 1397: 1291: 1199: 1071: 931:"Using Dual SIM with two nano-SIM cards" 717: 711: 693:"Dual SIM review: Mobiles go two-in-one" 265: 34: 18: 1405:"8 reasons to opt for a Dual SIM phone" 748: 730: 680: 597: 575: 27:phone with two SIM card slots. It uses 2333: 1350: 1344: 1180: 991: 848: 823: 754: 656: 654: 550: 523: 1428: 1017: 718:Nazarian, Robert (24 February 2014). 634: 498: 261: 974:"Nokia C1-00 review: Dual SIM-phony" 966: 904: 484:Liao, Shannon (September 10, 2018). 483: 759:. Nokia Corporation. Archived from 651: 462: 152:added dual SIM support in its 2018 13: 2277:USA use restrictions while driving 2252:Legality of recording by civilians 1079:"Dual-SIM - Mobile terms glossary" 647:from the original on 14 July 2009. 456: 394:incorporating multiple SIM slots. 43:smartphone with two SIM card slots 14: 2357: 1454: 1351:Pratap, Ketan (15 October 2013). 164:alongside a single physical SIM. 2314: 2313: 2302: 2290: 1251:Gartenberg, Chaim (2018-10-16). 1181:Simons, Hadlee (10 April 2021). 278:card in place of the second SIM. 75:numbers, one for each SIM slot. 31:instead of the normal sized SIM. 1372: 1244: 1174: 923: 898: 873: 329: 16:Mobile phone with two SIM cards 635:Chase, Brendon (9 July 2009). 414:clients of the same provider. 354:Dual SIM phones are common in 1: 831:"Sony Xperia tipo dual specs" 450: 2297:Telecommunication portal 1154:"Redmi Note 4 Specification" 738:"Dual SIM Nokia C2 revealed" 167: 156:models, with models sold in 7: 463:Sin, Ben (August 2, 2018). 423: 185: 10: 2362: 2219:Phantom vibration syndrome 2214:Mental health from overuse 435:Subscriber Identity Module 209: 193: 85: 2346:Mobile telecommunications 2285: 2237: 2184: 2114: 2023: 1966: 1933: 1920: 1898:Open-source mobile phones 1859: 1811: 1761: 1750: 1649: 1568: 1476: 1462: 320: 245: 404: 370:, with local firms like 180: 2262:Photography and the law 2257:Mobile phones in prison 805:"Sony Xperia C Review" 755:Rhiain (3 June 2010). 279: 80:Cherry Mobile Quad Q70 44: 32: 2309:Telephones portal 2272:Texting while driving 2209:External power supply 1908:Windows Phone devices 1299:"Shanzai! (Wired UK)" 269: 224:Samsung Galaxy S Duos 134:Samsung's Duos series 128:and most notably the 38: 22: 2224:Radiation and health 1540:Standards comparison 1059:. September 12, 2018 356:developing countries 290:primary, and 3G and 202:phones, such as the 610:The Philippine Star 368:Indian subcontinent 138:Sony Xperia Z3 Dual 51:support use of two 1279:. 14 December 2013 1277:"HTC One Dual-SIM" 937:. 18 January 2023. 811:. 11 December 2013 613:. 24 December 2001 280: 262:Unequal connectors 45: 33: 2328: 2327: 2267:Telephone tapping 2110: 2109: 2058:Instant messaging 1916: 1915: 1645: 1644: 1187:Android Authority 1003:Android Community 905:Cipriani, Jason. 305:memory card. The 272:Samsung Galaxy S7 220:time multiplexing 99:systems-on-a-chip 2353: 2317: 2316: 2307: 2306: 2305: 2295: 2294: 2293: 2204:Electronic waste 2194:BlackBerry thumb 2144:Japanese culture 1931: 1930: 1891:iOS jailbreaking 1759: 1758: 1681:Operating system 1496:Network operator 1481:Channel capacity 1474: 1473: 1449: 1442: 1435: 1426: 1425: 1420: 1419: 1417: 1415: 1401: 1395: 1394: 1392: 1390: 1376: 1370: 1369: 1367: 1365: 1348: 1342: 1341: 1339: 1337: 1322: 1316: 1315: 1313: 1311: 1295: 1289: 1288: 1286: 1284: 1273: 1267: 1266: 1264: 1263: 1248: 1242: 1241: 1239: 1237: 1223: 1217: 1216: 1214: 1212: 1197: 1191: 1190: 1178: 1172: 1171: 1166: 1164: 1150: 1141: 1140: 1138: 1136: 1125: 1119: 1118: 1116: 1114: 1100: 1094: 1093: 1091: 1089: 1075: 1069: 1068: 1066: 1064: 1047: 1041: 1040: 1038: 1036: 1025:"Xperia M2 Dual" 1021: 1015: 1014: 1012: 1010: 1005:. 20 August 2012 995: 989: 988: 986: 984: 970: 964: 963: 961: 959: 945: 939: 938: 927: 921: 920: 918: 917: 902: 896: 895: 893: 892: 877: 871: 870: 868: 866: 852: 846: 845: 843: 841: 827: 821: 820: 818: 816: 801: 795: 794: 792: 790: 785:on 27 April 2014 781:. Archived from 771: 765: 764: 763:on 14 July 2011. 752: 746: 745: 744:on 14 July 2011. 734: 728: 727: 715: 709: 708: 706: 704: 689: 678: 677: 675: 673: 658: 649: 648: 632: 623: 622: 620: 618: 601: 595: 594: 592: 590: 579: 573: 572: 570: 568: 554: 548: 547: 545: 543: 527: 521: 520: 518: 516: 502: 496: 495: 481: 475: 474: 460: 430:Dual mode mobile 358:, especially in 2361: 2360: 2356: 2355: 2354: 2352: 2351: 2350: 2331: 2330: 2329: 2324: 2303: 2301: 2291: 2289: 2281: 2233: 2186: 2180: 2106: 2019: 1962: 1958:Cloud computing 1924: 1922: 1912: 1903:Symbian devices 1869:Android devices 1855: 1807: 1798:Satellite phone 1793:Projector phone 1753: 1746: 1651: 1641: 1564: 1469: 1465: 1458: 1453: 1423: 1413: 1411: 1403: 1402: 1398: 1388: 1386: 1378: 1377: 1373: 1363: 1361: 1349: 1345: 1335: 1333: 1324: 1323: 1319: 1309: 1307: 1297: 1296: 1292: 1282: 1280: 1275: 1274: 1270: 1261: 1259: 1249: 1245: 1235: 1233: 1225: 1224: 1220: 1210: 1208: 1198: 1194: 1179: 1175: 1162: 1160: 1152: 1151: 1144: 1134: 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Index


Samsung Galaxy
nano-SIM

Lenovo
mobile phones
SIM cards
mobile network
transceivers
IMEI
Cherry Mobile Quad Q70
Benefon
Mediatek
systems-on-a-chip
Nokia
Samsung
Sony
Nokia C2-00
Nokia C1-00
Nokia C2-03
Nokia X
Samsung's Duos series
Sony Xperia Z3 Dual
Sony Xperia C
tipo dual
Apple
iPhone XS
China
(Embedded) eSIM
Nokia C1-00

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